21955193988

Names of 21955193988

• Cardinal: 21955193988 can be written as Twenty-one billion, nine hundred fifty-five million, one hundred ninety-three thousand, nine hundred eighty-eight.

Scientific notation

• Scientific notation: 2.1955193988 × 10¹⁰

Factors of 21955193988

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1304

Divisors of 21955193988

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 6 7 12 13 14 21 26 28 39 42 52 59 78 84 91 118 156 177 182 236 273 354 364 413 433 546 708 767 787 826 866 1092 1239 1299 1534 1574 1652 1732 2301 2361 2478 2598 3031 3068 3148 4602 4722 4956 5196 5369 5509 5629 6062 9093 9204 9444 10231 10738 11018 11258 12124 16107 16527 16887 18186 20462 21476 22036 22516 25547 30693 32214 33054 33774 36372 39403 40924 46433 51094 61386 64428 66108 67548 71617 76641 78806 92866 102188 118209 122772 139299 143234 153282 157612 178829 185732 214851 236418 278598 286468 306564 325031 332111 340771 357658 429702 472836 536487 557196 603629 650062 664222 681542 715316 859404 975093 996333 1022313 1072974 1207258 1300124 1328444 1363084 1810887 1950186 1992666 2044626 2145948 2324777 2385397 2414516 3621774 3900372 3985332 4089252 4225403 4430023 4649554 4770794 6974331 7156191 7243548 8450806 8860046 9299108 9541588 12676209 13290069 13948662 14312382 16901612 17720092 20105489 25352418 26580138 27897324 28624764 31010161 40210978 50704836 53160276 60316467 62020322 80421956 93030483 120632934 124040644 140738423 186060966 241265868 261371357 281476846 372121932 422215269 522742714 562953692 784114071 844430538 1045485428 1568228142 1688861076 1829599499 3136456284 3659198998 5488798497 7318397996 10977596994 21955193988
• Sum of all divisors σ(n): 64349214720
• Sum of proper divisors (its aliquot sum) s(n): 42394020732
• 21955193988 is an abundant number, because the sum of its proper divisors (42394020732) is greater than itself. Its abundance is 20438826744

Bases of 21955193988

• Binary: 10100011100101000011010110010000100₂
• Hexadecimal: 0x51CA1AC84
• Base-36: A33K03O

Squares and roots of 21955193988

• 21955193988 squared (21955193988²) is 482030543050711344144
• 21955193988 cubed (21955193988³) is 10583074080819352882073747806272
• The square root of 21955193988 is 148172.8517239241
• The cube root of 21955193988 is 2800.1357922239

Scales and comparisons

• 21,955,193,988 seconds is equal to 698 years, 5 weeks, 4 days, 59 minutes, 48 seconds.
• To count from 1 to 21,955,193,988 would take you about one thousand, three hundred ninety-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 21955193988 cubic inches would be around 233.3 feet tall.

Recreational maths with 21955193988

• 21955193988 backwards is 88939155912
• The number of decimal digits it has is: 11
• The sum of 21955193988's digits is 60
• More coming soon!