21297561472

Names of 21297561472

• Cardinal: 21297561472 can be written as Twenty-one billion, two hundred ninety-seven million, five hundred sixty-one thousand, four hundred seventy-two.

Scientific notation

• Scientific notation: 2.1297561472 × 10¹⁰

Factors of 21297561472

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 545

Divisors of 21297561472

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 4 8 11 16 19 22 31 32 38 44 61 62 64 76 88 122 124 128 152 176 209 244 248 304 341 352 418 421 488 496 589 608 671 682 704 836 842 976 992 1159 1178 1216 1342 1364 1408 1672 1684 1891 1952 1984 2318 2356 2432 2684 2728 3344 3368 3782 3904 3968 4631 4636 4712 5368 5456 6479 6688 6736 7564 7808 7999 9262 9272 9424 10736 10912 12749 12958 13051 13376 13472 15128 15998 18524 18544 18848 20801 21472 21824 25498 25681 25916 26102 26752 26944 30256 31996 35929 37048 37088 37696 41602 42944 43648 50996 51362 51832 52204 53888 60512 63992 71858 74096 74176 75392 83204 85888 87989 101992 102724 103664 104408 121024 127984 143561 143716 148192 148352 166408 175978 203984 205448 207328 208816 242048 247969 255968 282491 287122 287432 296384 332816 351956 395219 407968 410896 414656 417632 487939 495938 511936 564982 574244 574864 592768 665632 703912 790438 796111 815936 821792 829312 835264 975878 991876 1023872 1129964 1148488 1149728 1331264 1407824 1580876 1592222 1631872 1643584 1670528 1951756 1983752 2259928 2296976 2299456 2662528 2727659 2815648 3161752 3184444 3287168 3903512 3967504 4519856 4593952 4598912 5367329 5455318 5631296 6323504 6368888 7807024 7935008 8757221 9039712 9187904 10734658 10910636 11262592 12647008 12737776 15126109 15614048 15870016 17514442 18079424 18375808 21469316 21821272 25294016 25475552 30252218 31228096 31740032 35028884 36158848 42938632 43642544 50588032 50951104 60504436 62456192 70057768 85877264 87285088 101902208 121008872 140115536 166387199 171754528 174570176 242017744 280231072 332774398 343509056 349140352 484035488 560462144 665548796 687018112 968070976 1120924288 1331097592 1936141952 2662195184 5324390368 10648780736 21297561472
• Sum of all divisors σ(n): 51239577600
• Sum of proper divisors (its aliquot sum) s(n): 29942016128
• 21297561472 is an abundant number, because the sum of its proper divisors (29942016128) is greater than itself. Its abundance is 8644454656

Bases of 21297561472

• Binary: 10011110101011011101111111110000000₂
• Hexadecimal: 0x4F56EFF80
• Base-36: 9S80NLS

Squares and roots of 21297561472

• 21297561472 squared (21297561472²) is 453586124653618806784
• 21297561472 cubed (21297561472³) is 9660278372656701244737530626048
• The square root of 21297561472 is 145936.8406948703
• The cube root of 21297561472 is 2771.8940536861

Scales and comparisons

• 21,297,561,472 seconds is equal to 677 years, 10 weeks, 1 day, 13 hours, 17 minutes, 52 seconds.
• To count from 1 to 21,297,561,472 would take you about one thousand, three hundred fifty-four 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 21297561472 cubic inches would be around 231 feet tall.

Recreational maths with 21297561472

• 21297561472 backwards is 27416579212
• The number of decimal digits it has is: 11
• The sum of 21297561472's digits is 46
• More coming soon!