21105258240

Names of 21105258240

• Cardinal: 21105258240 can be written as Twenty-one billion, one hundred five million, two hundred fifty-eight thousand, two hundred forty.

Scientific notation

• Scientific notation: 2.110525824 × 10¹⁰

Factors of 21105258240

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 8273

Divisors of 21105258240

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 8 10 11 12 15 16 20 22 24 30 32 33 40 44 48 55 60 61 64 66 80 88 96 110 120 122 128 132 160 165 176 183 192 220 240 244 256 264 305 320 330 352 366 384 440 480 488 528 610 640 660 671 704 732 768 880 915 960 976 1056 1220 1280 1320 1342 1408 1464 1760 1830 1920 1952 2013 2112 2440 2640 2684 2816 2928 3355 3520 3660 3840 3904 4026 4224 4880 5280 5368 5856 6710 7040 7320 7808 8052 8191 8448 9760 10065 10560 10736 11712 13420 14080 14640 15616 16104 16382 19520 20130 21120 21472 23424 24573 26840 29280 32208 32764 39040 40260 40955 42240 42944 46848 49146 53680 58560 64416 65528 78080 80520 81910 85888 90101 98292 107360 117120 122865 128832 131056 161040 163820 171776 180202 196584 214720 234240 245730 257664 262112 270303 322080 327640 360404 393168 429440 450505 491460 499651 515328 524224 540606 644160 655280 720808 786336 858880 901010 982920 999302 1048448 1081212 1288320 1310560 1351515 1441616 1498953 1572672 1802020 1965840 1998604 2096896 2162424 2498255 2576640 2621120 2703030 2883232 2997906 3145344 3604040 3931680 3997208 4324848 4996510 5242240 5406060 5496161 5766464 5995812 6290688 7208080 7494765 7863360 7994416 8649696 9993020 10484480 10812120 10992322 11532928 11991624 14416160 14989530 15726720 15988832 16488483 17299392 19986040 21624240 21984644 23065856 23983248 27480805 28832320 29979060 31453440 31977664 32976966 34598784 39972080 43248480 43969288 47966496 54961610 57664640 59958120 63955328 65953932 69197568 79944160 82442415 86496960 87938576 95932992 109923220 115329280 119916240 127910656 131907864 159888320 164884830 172993920 175877152 191865984 219846440 239832480 263815728 319776640 329769660 345987840 351754304 383731968 439692880 479664960 527631456 639553280 659539320 703508608 879385760 959329920 1055262912 1319078640 1407017216 1758771520 1918659840 2110525824 2638157280 3517543040 4221051648 5276314560 7035086080 10552629120 21105258240
• Sum of all divisors σ(n): 74747215872
• Sum of proper divisors (its aliquot sum) s(n): 53641957632
• 21105258240 is an abundant number, because the sum of its proper divisors (53641957632) is greater than itself. Its abundance is 32536699392

Bases of 21105258240

• Binary: 10011101001111110001010111100000000₂
• Hexadecimal: 0x4E9F8AF00
• Base-36: 9P1IXHC

Squares and roots of 21105258240

• 21105258240 squared (21105258240²) is 445431925377087897600
• 21105258240 cubed (21105258240³) is 9400955813423849458026676224000
• The square root of 21105258240 is 145276.4889443575
• The cube root of 21105258240 is 2763.5260122563

Scales and comparisons

• 21,105,258,240 seconds is equal to 671 years, 4 weeks, 1 day, 19 hours, 44 minutes.
• To count from 1 to 21,105,258,240 would take you about one thousand, three hundred forty-two 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 21105258240 cubic inches would be around 230.3 feet tall.

Recreational maths with 21105258240

• 21105258240 backwards is 04285250112
• 21105258240 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21105258240's digits is 30
• More coming soon!