21156098724

Names of 21156098724

• Cardinal: 21156098724 can be written as Twenty-one billion, one hundred fifty-six million, ninety-eight thousand, seven hundred twenty-four.

Scientific notation

• Scientific notation: 2.1156098724 × 10¹⁰

Factors of 21156098724

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 316

Divisors of 21156098724

• Number of divisors d(n): 180
• Complete list of divisors:
  1 2 3 4 6 9 12 18 27 36 37 54 74 81 101 108 111 148 162 173 202 222 303 324 333 346 404 444 519 606 666 692 909 999 1038 1212 1332 1557 1818 1998 2076 2727 2997 3114 3636 3737 3996 4671 5454 5994 6228 6401 7474 8181 9342 10201 10908 11211 11988 12802 14013 14948 16362 17473 18684 19203 20402 22422 25604 28026 30603 32724 33633 34946 38406 40804 44844 52419 56052 57609 61206 67266 69892 76812 91809 100899 104838 115218 122412 134532 157257 172827 183618 201798 209676 230436 275427 302697 314514 345654 367236 377437 403596 471771 518481 550854 605394 629028 646501 691308 754874 826281 943542 1036962 1101708 1132311 1210788 1293002 1415313 1509748 1652562 1764773 1887084 1939503 2073924 2264622 2586004 2830626 3305124 3396933 3529546 3879006 4529244 5294319 5661252 5818509 6793866 7059092 7758012 10190799 10588638 11637018 13587732 15882957 17455527 20381598 21177276 23274036 30572397 31765914 34911054 40763196 47648871 52366581 61144794 63531828 65296601 69822108 95297742 104733162 122289588 130593202 142946613 190595484 195889803 209466324 261186404 285893226 391779606 571786452 587669409 783559212 1175338818 1763008227 2350677636 3526016454 5289024681 7052032908 10578049362 21156098724
• Sum of all divisors σ(n): 57700550292
• Sum of proper divisors (its aliquot sum) s(n): 36544451568
• 21156098724 is an abundant number, because the sum of its proper divisors (36544451568) is greater than itself. Its abundance is 15388352844

Bases of 21156098724

• Binary: 10011101101000000000111001010100100₂
• Hexadecimal: 0x4ED0072A4
• Base-36: 9PVSM90

Squares and roots of 21156098724

• 21156098724 squared (21156098724²) is 447580513219634428176
• 21156098724 cubed (21156098724³) is 9469057524613173057680743247424
• The square root of 21156098724 is 145451.3620561871
• The cube root of 21156098724 is 2765.7432533039

Scales and comparisons

• 21,156,098,724 seconds is equal to 672 years, 36 weeks, 2 days, 6 hours, 5 minutes, 24 seconds.
• To count from 1 to 21,156,098,724 would take you about one thousand, three hundred forty-five years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 21156098724 cubic inches would be around 230.5 feet tall.

Recreational maths with 21156098724

• 21156098724 backwards is 42789065112
• The number of decimal digits it has is: 11
• The sum of 21156098724's digits is 45
• More coming soon!