28129975200

Names of 28129975200

• Cardinal: 28129975200 can be written as Twenty-eight billion, one hundred twenty-nine million, nine hundred seventy-five thousand, two hundred.

Scientific notation

• Scientific notation: 2.81299752 × 10¹⁰

Factors of 28129975200

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 4661

Divisors of 28129975200

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 23 24 25 30 32 36 37 40 45 46 48 50 60 69 72 74 75 80 90 92 96 100 111 115 120 138 144 148 150 160 180 184 185 200 207 222 225 230 240 276 288 296 300 333 345 360 368 370 400 414 444 450 460 480 552 555 575 592 600 666 690 720 736 740 800 828 851 888 900 920 925 1035 1104 1110 1150 1184 1200 1332 1380 1440 1480 1656 1665 1702 1725 1776 1800 1840 1850 2070 2208 2220 2300 2400 2553 2664 2760 2775 2960 3312 3330 3404 3450 3552 3600 3680 3700 4140 4255 4440 4591 4600 5106 5175 5328 5520 5550 5920 6624 6660 6808 6900 7200 7400 7659 8280 8325 8510 8880 9182 9200 10212 10350 10656 11040 11100 12765 13320 13616 13773 13800 14800 15318 16560 16650 17020 17760 18364 18400 20424 20700 21275 22200 22955 25530 26640 27232 27546 27600 29600 30636 33120 33300 34040 36728 38295 40848 41319 41400 42550 44400 45910 51060 53280 55092 55200 61272 63825 66600 68080 68865 73456 76590 81696 82638 82800 85100 88800 91820 102120 105593 110184 114775 122544 127650 133200 136160 137730 146912 153180 165276 165600 169867 170200 183640 191475 204240 206595 211186 220368 229550 245088 255300 266400 275460 306360 316779 330552 339734 340400 344325 367280 382950 408480 413190 422372 440736 459100 509601 510600 527965 550920 612720 633558 661104 679468 680800 688650 734560 765900 826380 844744 849335 918200 950337 1019202 1021200 1032975 1055930 1101840 1225440 1267116 1322208 1358936 1377300 1528803 1531800 1583895 1652760 1689488 1698670 1836400 1900674 2038404 2042400 2065950 2111860 2203680 2534232 2548005 2639825 2717872 2754600 3057606 3063600 3167790 3305520 3378976 3397340 3672800 3801348 3906941 4076808 4131900 4223720 4246675 4751685 5068464 5096010 5279650 5435744 5509200 6115212 6127200 6335580 6611040 6794680 7602696 7644015 7813882 7919475 8153616 8263800 8447440 8493350 9503370 10136928 10192020 10559300 11018400 11720823 12230424 12671160 12740025 13589360 15205392 15288030 15627764 15838950 16307232 16527600 16894880 16986700 19006740 19534705 20384040 21118600 23441646 23758425 24460848 25342320 25480050 27178720 30410784 30576060 31255528 31677900 33055200 33973400 35162469 38013480 38220075 39069410 40768080 42237200 46883292 47516850 48921696 50684640 50960100 58604115 61152120 62511056 63355800 67946800 70324938 76026960 76440150 78138820 81536160 84474400 93766584 95033700 97673525 101920200 117208230 122304240 125022112 126711600 135893600 140649876 152053920 152880300 156277640 175812345 187533168 190067400 195347050 203840400 234416460 244608480 253423200 281299752 293020575 305760600 312555280 351624690 375066336 380134800 390694100 407680800 468832920 562599504 586041150 611521200 625110560 703249380 760269600 781388200 879061725 937665840 1125199008 1172082300 1223042400 1406498760 1562776400 1758123450 1875331680 2344164600 2812997520 3125552800 3516246900 4688329200 5625995040 7032493800 9376658400 14064987600 28129975200
• Sum of all divisors σ(n): 106326694656
• Sum of proper divisors (its aliquot sum) s(n): 78196719456
• 28129975200 is an abundant number, because the sum of its proper divisors (78196719456) is greater than itself. Its abundance is 50066744256

Bases of 28129975200

• Binary: 11010001100101011010101101110100000₂
• Hexadecimal: 0x68CAD5BA0
• Base-36: CX7UZS0

Squares and roots of 28129975200

• 28129975200 squared (28129975200²) is 791295504752615040000
• 28129975200 cubed (28129975200³) is 22259122924562543210347008000000
• The square root of 28129975200 is 167719.9308370953
• The cube root of 28129975200 is 3041.2803067481

Scales and comparisons

• 28,129,975,200 seconds is equal to 894 years, 23 weeks, 1 day, 10 hours.
• To count from 1 to 28,129,975,200 would take you about one thousand, seven hundred eighty-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 28129975200 cubic inches would be around 253.4 feet tall.

Recreational maths with 28129975200

• 28129975200 backwards is 00257992182
• 28129975200 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 28129975200's digits is 45
• More coming soon!