21347721216

Names of 21347721216

• Cardinal: 21347721216 can be written as Twenty-one billion, three hundred forty-seven million, seven hundred twenty-one thousand, two hundred sixteen.

Scientific notation

• Scientific notation: 2.1347721216 × 10¹⁰

Factors of 21347721216

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 12617

Divisors of 21347721216

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 23 24 32 36 46 48 64 69 72 92 96 128 138 144 184 192 207 256 276 288 368 384 414 512 552 576 736 768 828 1024 1104 1152 1472 1536 1656 2048 2208 2304 2944 3072 3312 4096 4416 4608 5888 6144 6624 8192 8832 9216 11776 12288 12589 13248 17664 18432 23552 24576 25178 26496 35328 36864 37767 47104 50356 52992 70656 73728 75534 94208 100712 105984 113301 141312 151068 188416 201424 211968 226602 282624 289547 302136 402848 423936 453204 565248 579094 604272 805696 847872 868641 906408 1158188 1208544 1611392 1695744 1737282 1812816 2316376 2417088 2605923 3222784 3474564 3625632 4632752 4834176 5211846 6445568 6949128 7251264 9265504 9668352 10423692 12891136 13898256 14502528 18531008 19336704 20847384 25782272 27796512 29005056 37062016 38673408 41694768 51564544 55593024 58010112 74124032 77346816 83389536 103129088 111186048 116020224 148248064 154693632 166779072 222372096 232040448 296496128 309387264 333558144 444744192 464080896 592992256 667116288 889488384 928161792 1185984512 1334232576 1778976768 2371969024 2668465152 3557953536 5336930304 7115907072 10673860608 21347721216
• Sum of all divisors σ(n): 64353734640
• Sum of proper divisors (its aliquot sum) s(n): 43006013424
• 21347721216 is an abundant number, because the sum of its proper divisors (43006013424) is greater than itself. Its abundance is 21658292208

Bases of 21347721216

• Binary: 10011111000011011000110000000000000₂
• Hexadecimal: 0x4F86C6000
• Base-36: 9T1VR40

Squares and roots of 21347721216

• 21347721216 squared (21347721216²) is 455725201116056518656
• 21347721216 cubed (21347721216³) is 9728694544531106621567791005696
• The square root of 21347721216 is 146108.5939156215
• The cube root of 21347721216 is 2774.0684573269

Scales and comparisons

• 21,347,721,216 seconds is equal to 678 years, 41 weeks, 1 day, 2 hours, 33 minutes, 36 seconds.
• To count from 1 to 21,347,721,216 would take you about one thousand, three hundred fifty-seven 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 21347721216 cubic inches would be around 231.2 feet tall.

Recreational maths with 21347721216

• 21347721216 backwards is 61212774312
• 21347721216 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21347721216's digits is 36
• More coming soon!