81642059928

Names of 81642059928

• Cardinal: 81642059928 can be written as Eighty-one billion, six hundred forty-two million, fifty-nine thousand, nine hundred twenty-eight.

Scientific notation

• Scientific notation: 8.1642059928 × 10¹⁰

Factors of 81642059928

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 100

Divisors of 81642059928

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 13 18 22 24 26 33 36 39 44 52 66 71 72 78 88 99 104 117 121 132 142 143 156 169 198 213 234 242 264 284 286 312 338 363 396 426 429 468 484 507 568 572 639 676 726 781 792 852 858 923 936 968 1014 1089 1144 1278 1287 1331 1352 1452 1521 1562 1573 1704 1716 1846 1859 2028 2178 2343 2556 2574 2662 2769 2904 3042 3124 3146 3432 3692 3718 3993 4056 4356 4686 4719 5041 5112 5148 5324 5538 5577 6084 6248 6292 7029 7384 7436 7986 8307 8591 8712 9372 9438 10082 10153 10296 10648 11076 11154 11979 11999 12168 12584 14058 14157 14872 15123 15972 16614 16731 17182 17303 18744 18876 20164 20306 20449 22152 22308 23958 23998 25773 28116 28314 30246 30459 31944 33228 33462 34364 34606 35997 37752 40328 40612 40898 44616 45369 47916 47996 51546 51909 55451 56232 56628 60492 60918 61347 65533 66456 66924 68728 69212 71994 77319 81224 81796 90738 91377 94501 95832 95992 103092 103818 107991 110902 111683 113256 120984 121836 122694 131066 131989 133848 138424 143988 154638 155727 163592 166353 181476 182754 184041 189002 196599 206184 207636 215982 221804 223366 224939 243672 245388 262132 263978 283503 287976 309276 311454 332706 335049 362952 365508 368082 378004 393198 395967 415272 431964 443608 446732 449878 490776 499059 524264 527956 567006 589797 609961 618552 622908 665412 670098 674817 720863 731016 736164 756008 786396 791934 850509 851929 863928 893464 899756 998118 1005147 1055912 1134012 1179594 1187901 1219922 1228513 1245816 1330824 1340196 1349634 1441726 1451879 1472328 1572792 1583868 1701018 1703858 1799512 1829883 1996236 2010294 2024451 2162589 2268024 2359188 2375802 2439844 2457026 2555787 2680392 2699268 2883452 2903758 3167736 3402036 3407716 3659766 3685539 3992472 4020588 4048902 4325178 4355637 4718376 4751604 4879688 4914052 5111574 5398536 5489649 5766904 5807516 6487767 6709571 6804072 6815432 7319532 7371078 7667361 7929493 8041176 8097804 8650356 8711274 9371219 9503208 9828104 10223148 10979298 11056617 11615032 12975534 13066911 13419142 14639064 14742156 15334722 15858986 15970669 16195608 17300712 17422548 18742438 20128713 20446296 21958596 22113234 23788479 25951068 26133822 26838284 28113657 29484312 30669444 31717972 31941338 34845096 37484876 40257426 43917192 44226468 47576958 47912007 51902136 52267644 53676568 56227314 60386139 61338888 63435944 63882676 71365437 74969752 80514852 84340971 87224423 88452936 95153916 95824014 103083409 104535288 112454628 120772278 127765352 142730874 143736021 161029704 168681942 174448846 190307832 191648028 206166818 224909256 241544556 261673269 285461748 287472042 309250227 337363884 348897692 383296056 412333636 483089112 523346538 570923496 574944084 618500454 674727768 697795384 785019807 824667272 927750681 1046693076 1133917499 1149888168 1237000908 1570039614 1855501362 2093386152 2267834998 2474001816 3140079228 3401752497 3711002724 4535669996 6280158456 6803504994 7422005448 9071339992 10205257491 13607009988 20410514982 27214019976 40821029964 81642059928
• Sum of all divisors σ(n): 267117640920
• Sum of proper divisors (its aliquot sum) s(n): 185475580992
• 81642059928 is an abundant number, because the sum of its proper divisors (185475580992) is greater than itself. Its abundance is 103833521064

Bases of 81642059928

• Binary: 1001100000010001111101111100010011000₂
• Hexadecimal: 0x13023EF898
• Base-36: 11I7KOM0

Squares and roots of 81642059928

• 81642059928 squared (81642059928²) is 6665425949287143365184
• 81642059928 cubed (81642059928³) is 544179104797347247500279716746752
• The square root of 81642059928 is 285730.7472569237
• The cube root of 81642059928 is 4338.1508670661

Scales and comparisons

• 81,642,059,928 seconds is equal to 2,595 years, 50 weeks, 1 day, 5 hours, 58 minutes, 48 seconds.
• To count from 1 to 81,642,059,928 would take you about five thousand, one hundred ninety-one 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 81642059928 cubic inches would be around 361.5 feet tall.

Recreational maths with 81642059928

• 81642059928 backwards is 82995024618
• The number of decimal digits it has is: 11
• The sum of 81642059928's digits is 54
• More coming soon!