21202940864

Names of 21202940864

• Cardinal: 21202940864 can be written as Twenty-one billion, two hundred two million, nine hundred forty thousand, eight hundred sixty-four.

Scientific notation

• Scientific notation: 2.1202940864 × 10¹⁰

Factors of 21202940864

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1217

Divisors of 21202940864

• Number of divisors d(n): 224
• Complete list of divisors:
  1 2 4 7 8 14 16 19 28 32 38 43 53 56 64 76 86 106 112 133 152 172 212 224 266 301 304 344 371 424 448 532 602 608 688 742 817 848 1007 1064 1093 1204 1216 1376 1484 1634 1696 2014 2128 2186 2279 2408 2752 2968 3268 3392 4028 4256 4372 4558 4816 5719 5936 6536 7049 7651 8056 8512 8744 9116 9632 11438 11872 13072 14098 15302 15953 16112 17488 18232 19264 20767 22876 23744 26144 28196 30604 31906 32224 34976 36464 41534 43301 45752 46999 52288 56392 57929 61208 63812 64448 69952 72928 83068 86602 91504 93998 112784 115858 122416 127624 145369 145856 166136 173204 183008 187996 225568 231716 244832 255248 290738 303107 328993 332272 346408 366016 375992 405503 451136 463432 489664 510496 581476 606214 657986 664544 692816 751984 811006 892981 926864 1020992 1100651 1162952 1212428 1315972 1329088 1385632 1503968 1622012 1785962 1853728 2201302 2325904 2424856 2490947 2631944 2771264 3007936 3244024 3571924 3707456 4402604 4651808 4849712 4981894 5263888 6250867 6488048 7143848 7704557 8805208 9303616 9699424 9963788 10527776 12501734 12976096 14287696 15409114 17436629 17610416 19398848 19927576 21055552 25003468 25952192 28575392 30818228 34873258 35220832 39855152 47327993 50006936 57150784 61636456 69746516 70441664 79710304 94655986 100013872 123272912 139493032 159420608 189311972 200027744 246545824 278986064 331295951 378623944 400055488 493091648 557972128 662591902 757247888 1115944256 1325183804 1514495776 2650367608 3028991552 5300735216 10601470432 21202940864
• Sum of all divisors σ(n): 52818670080
• Sum of proper divisors (its aliquot sum) s(n): 31615729216
• 21202940864 is an abundant number, because the sum of its proper divisors (31615729216) is greater than itself. Its abundance is 10412788352

Bases of 21202940864

• Binary: 10011101111110010110011001111000000₂
• Hexadecimal: 0x4EFCB33C0
• Base-36: 9QNOLVK

Squares and roots of 21202940864

• 21202940864 squared (21202940864²) is 449564701282281066496
• 21202940864 cubed (21202940864³) is 9532093775830030423941539692544
• The square root of 21202940864 is 145612.2964038409
• The cube root of 21202940864 is 2767.7829777393

Scales and comparisons

• 21,202,940,864 seconds is equal to 674 years, 9 weeks, 5 days, 9 hours, 47 minutes, 44 seconds.
• To count from 1 to 21,202,940,864 would take you about one thousand, three hundred forty-eight 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 21202940864 cubic inches would be around 230.6 feet tall.

Recreational maths with 21202940864

• 21202940864 backwards is 46804920212
• 21202940864 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21202940864's digits is 38
• More coming soon!