18422472978

Names of 18422472978

• Cardinal: 18422472978 can be written as Eighteen billion, four hundred twenty-two million, four hundred seventy-two thousand, nine hundred seventy-eight.

Scientific notation

• Scientific notation: 1.8422472978 × 10¹⁰

Factors of 18422472978

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 6085

Divisors of 18422472978

• Number of divisors d(n): 224
• Complete list of divisors:
  1 2 3 6 7 9 13 14 18 21 23 26 27 39 42 46 54 63 69 78 81 91 117 126 138 161 162 182 189 207 234 243 273 299 322 351 378 414 483 486 546 567 598 621 702 729 819 897 966 1053 1134 1242 1449 1458 1638 1701 1794 1863 2093 2106 2457 2691 2898 3159 3402 3726 4186 4347 4914 5103 5382 5589 6037 6279 6318 7371 8073 8694 9477 10206 11178 12074 12558 13041 14742 16146 16767 18111 18837 18954 22113 24219 26082 33534 36222 37674 39123 42259 44226 48438 54333 56511 66339 72657 78246 78481 84518 108666 113022 117369 126777 132678 138851 145314 156962 162999 169533 217971 234738 235443 253554 277702 325998 339066 380331 416553 435942 470886 488997 508599 549367 706329 760662 833106 971957 977994 1017198 1098734 1140993 1249659 1412658 1466991 1525797 1648101 1805063 1943914 2118987 2281986 2499318 2915871 2933982 3051594 3296202 3422979 3610126 3748977 4237974 4400973 4944303 5415189 5831742 6356961 6845958 7497954 8747613 8801946 9888606 10268937 10830378 11246931 12635441 12713922 14832909 16245567 17495226 19070883 20537874 22493862 25270882 26242839 29665818 30806811 32491134 33740793 37906323 38141766 44498727 48736701 52485678 57212649 61613622 67481586 75812646 78728517 88997454 97473402 101222379 113718969 114425298 133496181 146210103 157457034 202444758 227437938 236185551 266992362 292420206 341156907 400488543 438630309 472371102 682313814 708556653 800977086 877260618 1023470721 1315890927 1417113306 2046941442 2631781854 3070412163 6140824326 9211236489 18422472978
• Sum of all divisors σ(n): 53218642176
• Sum of proper divisors (its aliquot sum) s(n): 34796169198
• 18422472978 is an abundant number, because the sum of its proper divisors (34796169198) is greater than itself. Its abundance is 16373696220

Bases of 18422472978

• Binary: 10001001010000100001010000100010010₂
• Hexadecimal: 0x44A10A112
• Base-36: 8GO9J4I

Squares and roots of 18422472978

• 18422472978 squared (18422472978²) is 339387510625140188484
• 18422472978 cubed (18422472978³) is 6252357243562333009808316785352
• The square root of 18422472978 is 135729.4108806195
• The cube root of 18422472978 is 2641.0866059015

Scales and comparisons

• 18,422,472,978 seconds is equal to 585 years, 40 weeks, 3 days, 1 hour, 36 minutes, 18 seconds.
• To count from 1 to 18,422,472,978 would take you about one thousand, one hundred seventy-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 18422472978 cubic inches would be around 220.1 feet tall.

Recreational maths with 18422472978

• 18422472978 backwards is 87927422481
• 18422472978 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18422472978's digits is 54
• More coming soon!