247 (number)

Last updated
246 247 248
Cardinal two hundred forty-seven
Ordinal 247th
(two hundred forty-seventh)
Factorization 13 × 19
Greek numeral ΣΜΖ´
Roman numeral CCXLVII
Binary 111101112
Ternary 1000113
Senary 10516
Octal 3678
Duodecimal 18712
Hexadecimal F716

247 (two hundred [and] forty-seven) is the natural number following 246 and preceding 248.

Additionally, 247 is:

Related Research Articles

25 (twenty-five) is the natural number following 24 and preceding 26.

76 (seventy-six) is the natural number following 75 and preceding 77.

31 (thirty-one) is the natural number following 30 and preceding 32. It is a prime number.

37 (thirty-seven) is the natural number following 36 and preceding 38.

51 (fifty-one) is the natural number following 50 and preceding 52.

1000 or one thousand is the natural number following 999 and preceding 1001. In most English-speaking countries, it can be written with or without a comma or sometimes a period separating the thousands digit: 1,000.

300 is the natural number following 299 and preceding 301.

400 is the natural number following 399 and preceding 401.

500 is the natural number following 499 and preceding 501.

700 is the natural number following 699 and preceding 701.

600 is the natural number following 599 and preceding 601.

800 is the natural number following 799 and preceding 801.

900 is the natural number following 899 and preceding 901. It is the square of 30 and the sum of Euler's totient function for the first 54 positive integers. In base 10 it is a Harshad number. It is also the first number to be the square of a sphenic number.

2000 is a natural number following 1999 and preceding 2001.

3000 is the natural number following 2999 and preceding 3001. It is the smallest number requiring thirteen letters in English.

4000 is the natural number following 3999 and preceding 4001. It is a decagonal number.

135 is the natural number following 134 and preceding 136.

10,000,000 is the natural number following 9,999,999 and preceding 10,000,001.

20,000 is the natural number that comes after 19,999 and before 20,001.

30,000 is the natural number that comes after 29,999 and before 30,001.

References

  1. "Sloane's A078972 : Brilliant numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
  2. "Sloane's A000326 : Pentagonal numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
  3. Friedman, Erich. "What's Special About This Number?". stetson.edu. Archived from the original on 23 February 2018. Retrieved 15 April 2016.