21003356808

Names of 21003356808

• Cardinal: 21003356808 can be written as Twenty-one billion, three million, three hundred fifty-six thousand, eight hundred eight.

Scientific notation

• Scientific notation: 2.1003356808 × 10¹⁰

Factors of 21003356808

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 5743

Divisors of 21003356808

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 18 19 21 24 27 28 36 38 42 54 56 57 63 72 76 84 108 114 126 131 133 152 168 171 189 216 228 252 262 266 342 378 393 399 456 504 513 524 532 684 756 786 798 917 1026 1048 1064 1179 1197 1368 1512 1572 1596 1834 2052 2358 2394 2489 2751 3144 3192 3537 3591 3668 4104 4716 4788 4978 5502 5581 7074 7182 7336 7467 8253 9432 9576 9956 11004 11162 14148 14364 14934 16506 16743 17423 19912 22008 22324 22401 24759 28296 28728 29868 33012 33486 34846 39067 44648 44802 49518 50229 52269 59736 66024 66972 67203 69692 78134 89604 99036 100458 104538 106039 117201 133944 134406 139384 150687 156268 156807 179208 198072 200916 209076 212078 234402 268812 301374 312536 313614 318117 351603 401832 418152 424156 468804 470421 537624 602748 627228 636234 703206 731111 742273 848312 937608 940842 954351 1054809 1205496 1254456 1272468 1406412 1462222 1484546 1881684 1908702 2109618 2193333 2226819 2544936 2812824 2863053 2924444 2969092 3763368 3817404 4219236 4386666 4453638 5117777 5726106 5848888 5938184 6579999 6680457 7634808 8438472 8773332 8907276 10235554 11452212 13159998 13360914 13891109 15353331 17546664 17814552 19739997 20041371 20471108 22904424 26319996 26721828 27782218 30706662 39479994 40082742 40942216 41673327 46059993 52639992 53443656 55564436 61413324 78959988 80165484 83346654 92119986 97237763 111128872 122826648 125019981 138179979 157919976 160330968 166693308 184239972 194475526 250039962 276359958 291713289 333386616 368479944 375059943 388951052 500079924 552719916 583426578 750119886 777902104 875139867 1000159848 1105439832 1166853156 1500239772 1750279734 2333706312 2625419601 3000479544 3500559468 5250839202 7001118936 10501678404 21003356808
• Sum of all divisors σ(n): 70735104000
• Sum of proper divisors (its aliquot sum) s(n): 49731747192
• 21003356808 is an abundant number, because the sum of its proper divisors (49731747192) is greater than itself. Its abundance is 28728390384

Bases of 21003356808

• Binary: 10011100011111001011100101010001000₂
• Hexadecimal: 0x4E3E5CA88
• Base-36: 9NCUTU0

Squares and roots of 21003356808

• 21003356808 squared (21003356808²) is 441140997204159948864
• 21003356808 cubed (21003356808³) is 9265441766915901827893626266112
• The square root of 21003356808 is 144925.3490870387
• The cube root of 21003356808 is 2759.0711713863

Scales and comparisons

• 21,003,356,808 seconds is equal to 667 years, 43 weeks, 5 days, 9 hours, 46 minutes, 48 seconds.
• To count from 1 to 21,003,356,808 would take you about one thousand, three hundred thirty-five 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 21003356808 cubic inches would be around 229.9 feet tall.

Recreational maths with 21003356808

• 21003356808 backwards is 80865330012
• 21003356808 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21003356808's digits is 36
• More coming soon!