21128623808

Names of 21128623808

• Cardinal: 21128623808 can be written as Twenty-one billion, one hundred twenty-eight million, six hundred twenty-three thousand, eight hundred eight.

Scientific notation

• Scientific notation: 2.1128623808 × 10¹⁰

Factors of 21128623808

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 433

Divisors of 21128623808

• Number of divisors d(n): 224
• Complete list of divisors:
  1 2 4 8 16 17 19 32 34 38 41 64 68 76 82 97 136 152 164 194 257 272 304 323 328 388 514 544 608 646 656 697 776 779 1028 1088 1216 1292 1312 1394 1552 1558 1649 1843 2056 2584 2624 2788 3104 3116 3298 3686 3977 4112 4369 4883 5168 5576 6208 6232 6596 7372 7954 8224 8738 9766 10336 10537 11152 12464 13192 13243 14744 15908 16448 17476 19532 20672 21074 22304 24928 24929 26384 26486 29488 31331 31816 34952 39064 42148 44608 49856 49858 52768 52972 58976 62662 63632 67609 69904 75563 78128 83011 84296 99716 105536 105944 117952 125324 127264 135218 139808 151126 156256 166022 168592 179129 199432 200203 211888 250648 254528 270436 279616 302252 312512 332044 337184 358258 398864 400406 423776 423793 473651 501296 540872 604504 664088 674368 716516 797728 800812 847552 847586 947302 1002592 1022089 1081744 1209008 1284571 1328176 1433032 1595456 1601624 1695172 1894604 2005184 2044178 2163488 2418016 2569142 2656352 2866064 3203248 3390344 3403451 3789208 4088356 4326976 4836032 5138284 5312704 5732128 6406496 6780688 6806902 7578416 8052067 8176712 10276568 11464256 12812992 13561376 13613804 15156832 16104134 16353424 17375513 19419691 20553136 27122752 27227608 30313664 32208268 32706848 34751026 38839382 41106272 54455216 64416536 65413696 69502052 77678764 82212544 108910432 128833072 139004104 155357528 217820864 257666144 278008208 310715056 330134747 515332288 556016416 621430112 660269494 1112032832 1242860224 1320538988 2641077976 5282155952 10564311904 21128623808
• Sum of all divisors σ(n): 48551348160
• Sum of proper divisors (its aliquot sum) s(n): 27422724352
• 21128623808 is an abundant number, because the sum of its proper divisors (27422724352) is greater than itself. Its abundance is 6294100544

Bases of 21128623808

• Binary: 10011101011010111010011011011000000₂
• Hexadecimal: 0x4EB5D36C0
• Base-36: 9PFFQGW

Squares and roots of 21128623808

• 21128623808 squared (21128623808²) is 446418744019984420864
• 21128623808 cubed (21128623808³) is 9432213703238100462456202330112
• The square root of 21128623808 is 145356.8842814127
• The cube root of 21128623808 is 2764.5454665861

Scales and comparisons

• 21,128,623,808 seconds is equal to 671 years, 42 weeks, 6 days, 6 hours, 10 minutes, 8 seconds.
• To count from 1 to 21,128,623,808 would take you about one thousand, three hundred forty-three 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 21128623808 cubic inches would be around 230.4 feet tall.

Recreational maths with 21128623808

• 21128623808 backwards is 80832682112
• 21128623808 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21128623808's digits is 41
• More coming soon!