21242685672

Names of 21242685672

• Cardinal: 21242685672 can be written as Twenty-one billion, two hundred forty-two million, six hundred eighty-five thousand, six hundred seventy-two.

Scientific notation

• Scientific notation: 2.1242685672 × 10¹⁰

Factors of 21242685672

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 668

Divisors of 21242685672

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 18 19 24 26 27 36 38 39 52 54 57 72 76 78 104 108 114 117 152 156 171 216 228 234 247 312 342 351 456 468 494 513 631 684 702 741 936 988 1026 1262 1368 1404 1482 1893 1976 2052 2223 2524 2808 2964 3786 4104 4446 5048 5679 5928 6669 7572 8203 8892 11358 11989 13338 15144 16406 17037 17784 22716 23978 24609 26676 32812 34074 35967 45432 47956 49218 53352 65624 68148 71934 73827 95912 98436 107901 136296 143868 147654 155857 196872 215802 221481 287736 295308 311714 323703 398161 431604 442962 467571 590616 623428 647406 796322 863208 885924 935142 1194483 1246856 1294812 1402713 1592644 1771848 1870284 2388966 2589624 2805426 3185288 3583449 3740568 4208139 4777932 5176093 5610852 7166898 7565059 8416278 9555864 10352186 10750347 11221704 14333796 15130118 15528279 16832556 20704372 21500694 22695177 28667592 30260236 31056558 33665112 41408744 43001388 45390354 46584837 60520472 62113116 68085531 86002776 90780708 93169674 98345767 124226232 136171062 139754511 181561416 186339348 196691534 204256593 272342124 279509022 295037301 372678696 393383068 408513186 544684248 559018044 590074602 786766136 817026372 885111903 1118036088 1180149204 1634052744 1770223806 2360298408 2655335709 3540447612 5310671418 7080895224 10621342836 21242685672
• Sum of all divisors σ(n): 66997224000
• Sum of proper divisors (its aliquot sum) s(n): 45754538328
• 21242685672 is an abundant number, because the sum of its proper divisors (45754538328) is greater than itself. Its abundance is 24511852656

Bases of 21242685672

• Binary: 10011110010001010011010100011101000₂
• Hexadecimal: 0x4F229A8E8
• Base-36: 9RBCH60

Squares and roots of 21242685672

• 21242685672 squared (21242685672²) is 451251694559394091584
• 21242685672 cubed (21242685672³) is 9585797906482561222292892584448
• The square root of 21242685672 is 145748.7072738557
• The cube root of 21242685672 is 2769.5112967905

Scales and comparisons

• 21,242,685,672 seconds is equal to 675 years, 23 weeks, 3 days, 10 hours, 1 minute, 12 seconds.
• To count from 1 to 21,242,685,672 would take you about one thousand, three hundred fifty 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 21242685672 cubic inches would be around 230.8 feet tall.

Recreational maths with 21242685672

• 21242685672 backwards is 27658624212
• The number of decimal digits it has is: 11
• The sum of 21242685672's digits is 45
• More coming soon!