21528535840

Names of 21528535840

• Cardinal: 21528535840 can be written as Twenty-one billion, five hundred twenty-eight million, five hundred thirty-five thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.152853584 × 10¹⁰

Factors of 21528535840

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 12763

Divisors of 21528535840

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 32 35 37 40 41 56 70 74 80 82 112 140 148 160 164 185 205 224 259 280 287 296 328 370 410 518 560 574 592 656 740 820 1036 1120 1148 1184 1295 1312 1435 1480 1517 1640 2072 2296 2590 2870 2960 3034 3280 4144 4592 5180 5740 5920 6068 6560 7585 8288 9184 10360 10619 11480 12136 12671 15170 20720 21238 22960 24272 25342 30340 41440 42476 45920 48544 50684 53095 60680 63355 84952 88697 101368 106190 121360 126710 169904 177394 202736 212380 242720 253420 339808 354788 405472 424760 443485 468827 506840 519511 709576 849520 886970 937654 1013680 1039022 1419152 1699040 1773940 1875308 2027360 2078044 2344135 2597555 2838304 3281789 3547880 3636577 3750616 4156088 4688270 5195110 6563578 7095760 7273154 7501232 8312176 9376540 10390220 13127156 14191520 14546308 15002464 16408945 16624352 18182885 18753080 19221907 20780440 26254312 29092616 32817890 36365770 37506160 38443814 41560880 52508624 58185232 65635780 72731540 75012320 76887628 83121760 96109535 105017248 116370464 131271560 134553349 145463080 153775256 192219070 262543120 269106698 290926160 307550512 384438140 525086240 538213396 581852320 615101024 672766745 768876280 1076426792 1345533490 1537752560 2152853584 2691066980 3075505120 4305707168 5382133960 10764267920 21528535840
• Sum of all divisors σ(n): 61158924288
• Sum of proper divisors (its aliquot sum) s(n): 39630388448
• 21528535840 is an abundant number, because the sum of its proper divisors (39630388448) is greater than itself. Its abundance is 18101852608

Bases of 21528535840

• Binary: 10100000011001100110110001100100000₂
• Hexadecimal: 0x503336320
• Base-36: 9W1J8KG

Squares and roots of 21528535840

• 21528535840 squared (21528535840²) is 463477855414164505600
• 21528535840 cubed (21528535840³) is 9977999621330178602465480704000
• The square root of 21528535840 is 146726.0571268785
• The cube root of 21528535840 is 2781.8785433009

Scales and comparisons

• 21,528,535,840 seconds is equal to 684 years, 28 weeks, 20 hours, 50 minutes, 40 seconds.
• To count from 1 to 21,528,535,840 would take you about one thousand, three hundred sixty-nine 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 21528535840 cubic inches would be around 231.8 feet tall.

Recreational maths with 21528535840

• 21528535840 backwards is 04853582512
• The number of decimal digits it has is: 11
• The sum of 21528535840's digits is 43
• More coming soon!