21293857620

Names of 21293857620

• Cardinal: 21293857620 can be written as Twenty-one billion, two hundred ninety-three million, eight hundred fifty-seven thousand, six hundred twenty.

Scientific notation

• Scientific notation: 2.129385762 × 10¹⁰

Factors of 21293857620

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2346

Divisors of 21293857620

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 7 9 10 12 14 15 17 18 20 21 28 30 34 35 36 42 45 51 60 63 68 70 84 85 90 102 105 119 126 140 153 170 180 204 210 238 252 255 306 315 340 357 420 476 510 571 595 612 630 714 765 1020 1071 1142 1190 1260 1428 1530 1713 1741 1785 2142 2284 2380 2855 3060 3426 3482 3570 3997 4284 5139 5223 5355 5710 6852 6964 7140 7994 8565 8705 9707 10278 10446 10710 11420 11991 12187 15669 15988 17130 17410 19414 19985 20556 20892 21420 23982 24374 25695 26115 29121 29597 31338 34260 34820 35973 36561 38828 39970 47964 48535 48748 51390 52230 58242 59194 59955 60935 62676 67949 71946 73122 78345 79940 87363 88791 97070 102780 104460 109683 116484 118388 119910 121870 135898 143892 145605 146244 147985 156690 174726 177582 179865 182805 194140 203847 207179 219366 239820 243740 266373 271796 291210 295970 313380 339745 349452 355164 359730 365610 407694 414358 436815 438732 443955 532746 548415 582420 591940 611541 621537 679490 719460 731220 815388 828716 873630 887910 994111 1019235 1035895 1065492 1096830 1223082 1243074 1331865 1358980 1747260 1775820 1864611 1988222 2038470 2071790 2193660 2446164 2486148 2663730 2982333 3057705 3107685 3729222 3976444 4076940 4143580 4970555 5327460 5964666 6115410 6215370 6958777 7458444 8946999 9323055 9941110 11929332 12230820 12430740 13917554 14911665 16899887 17893998 18646110 19882220 20876331 27835108 29823330 33799774 34793885 35787996 37292220 41752662 44734995 50699661 59646660 62628993 67599548 69587770 83505324 84499435 89469990 101399322 104381655 118299209 125257986 139175540 152098983 168998870 178939980 202798644 208763310 236598418 250515972 253498305 304197966 313144965 337997740 354897627 417526620 473196836 506996610 591496045 608395932 626289930 709795254 760494915 1013993220 1064692881 1182992090 1252579860 1419590508 1520989830 1774488135 2129385762 2365984180 3041979660 3548976270 4258771524 5323464405 7097952540 10646928810 21293857620
• Sum of all divisors σ(n): 78342840576
• Sum of proper divisors (its aliquot sum) s(n): 57048982956
• 21293857620 is an abundant number, because the sum of its proper divisors (57048982956) is greater than itself. Its abundance is 35755125336

Bases of 21293857620

• Binary: 10011110101001101100111101101010100₂
• Hexadecimal: 0x4F5367B54
• Base-36: 9S5T9P0

Squares and roots of 21293857620

• 21293857620 squared (21293857620²) is 453428372340832064400
• 21293857620 cubed (21293857620³) is 9655239201494024091664270728000
• The square root of 21293857620 is 145924.1502288089
• The cube root of 21293857620 is 2771.7333579719

Scales and comparisons

• 21,293,857,620 seconds is equal to 677 years, 4 weeks, 16 hours, 27 minutes.
• To count from 1 to 21,293,857,620 would take you about one thousand, three hundred fifty-four 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 21293857620 cubic inches would be around 231 feet tall.

Recreational maths with 21293857620

• 21293857620 backwards is 02675839212
• 21293857620 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21293857620's digits is 45
• More coming soon!