21642654789

Names of 21642654789

• Cardinal: 21642654789 can be written as Twenty-one billion, six hundred forty-two million, six hundred fifty-four thousand, seven hundred eighty-nine.

Scientific notation

• Scientific notation: 2.1642654789 × 10¹⁰

Factors of 21642654789

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 80

Divisors of 21642654789

• Number of divisors d(n): 144
• Complete list of divisors:
  1 3 7 9 21 27 29 41 63 81 87 123 189 203 243 261 287 369 567 609 729 783 841 861 1107 1189 1681 1701 1827 2187 2349 2523 2583 3321 3567 5043 5103 5481 5887 7047 7569 7749 8323 9963 10701 11767 15129 15309 16443 17661 21141 22707 23247 24969 29889 32103 34481 35301 45387 48749 49329 52983 63423 68121 69741 74907 89667 96309 103443 105903 136161 146247 147987 158949 204363 209223 224721 241367 288927 310329 317709 341243 408483 438741 443961 476847 613089 627669 674163 724101 866781 930987 953127 1023729 1225449 1316223 1413721 1430541 1839267 2022489 2172303 2600343 2792961 2859381 3071187 3676347 3948669 4241163 4291623 6067467 6516909 8378883 8578143 9213561 9896047 11846007 12723489 12874869 18202401 19550727 25136649 25734429 27640683 29688141 35538021 38170467 58652181 75409947 82922049 89064423 106614063 114511401 175956543 248766147 267193269 343534203 527869629 746298441 801579807 1030602609 2404739421 3091807827 7214218263 21642654789
• Sum of all divisors σ(n): 39379233920
• Sum of proper divisors (its aliquot sum) s(n): 17736579131
• 21642654789 is a deficient number, because the sum of its proper divisors (17736579131) is less than itself. Its deficiency is 3906075658

Bases of 21642654789

• Binary: 10100001010000000001011010001000101₂
• Hexadecimal: 0x50A00B445
• Base-36: 9XXH7B9

Squares and roots of 21642654789

• 21642654789 squared (21642654789²) is 468404506315824634521
• 21642654789 cubed (21642654789³) is 10137517031805362772800095371069
• The square root of 21642654789 is 147114.4275351673
• The cube root of 21642654789 is 2786.7852984107

Scales and comparisons

• 21,642,654,789 seconds is equal to 688 years, 8 weeks, 5 days, 16 hours, 33 minutes, 9 seconds.
• To count from 1 to 21,642,654,789 would take you about one thousand, three hundred seventy-six 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 21642654789 cubic inches would be around 232.2 feet tall.

Recreational maths with 21642654789

• 21642654789 backwards is 98745624612
• The number of decimal digits it has is: 11
• The sum of 21642654789's digits is 54
• More coming soon!