21031329408

Names of 21031329408

• Cardinal: 21031329408 can be written as Twenty-one billion, thirty-one million, three hundred twenty-nine thousand, four hundred eight.

Scientific notation

• Scientific notation: 2.1031329408 × 10¹⁰

Factors of 21031329408

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 847

Divisors of 21031329408

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 4 6 8 12 16 17 24 32 34 48 51 53 64 68 89 96 102 106 128 136 159 178 192 204 212 267 272 318 356 384 408 424 534 544 636 683 712 816 848 901 1068 1088 1272 1366 1424 1513 1632 1696 1802 2049 2136 2176 2544 2703 2732 2848 3026 3264 3392 3604 4098 4272 4539 4717 5088 5406 5464 5696 6052 6528 6784 7208 8196 8544 9078 9434 10176 10812 10928 11392 11611 12104 14151 14416 16392 17088 18156 18868 20352 21624 21856 23222 24208 28302 28832 32784 34176 34833 36199 36312 37736 43248 43712 46444 48416 56604 57664 60787 65568 69666 72398 72624 75472 80189 86496 87424 92888 96832 108597 113208 115328 121574 131136 139332 144796 145248 150944 160378 172992 182361 185776 193664 217194 226416 240567 243148 262272 278664 289592 290496 301888 320756 345984 364722 371552 434388 452832 481134 486296 557328 579184 580992 603776 615383 641512 729444 743104 868776 905664 962268 972592 1033379 1114656 1158368 1230766 1283024 1458888 1486208 1737552 1811328 1846149 1924536 1945184 2066758 2229312 2316736 2461532 2566048 2917776 3100137 3221711 3475104 3692298 3849072 3890368 4133516 4458624 4633472 4923064 5132096 5835552 6200274 6443422 6950208 7384596 7698144 7780736 8267032 9665133 9846128 10264192 11671104 12400548 12886844 13900416 14769192 15396288 16534064 19330266 19692256 23342208 24801096 25773688 29538384 30792576 33068128 38660532 39384512 49602192 51547376 54769087 59076768 66136256 77321064 78769024 99204384 103094752 109538174 118153536 132272512 154642128 164307261 198408768 206189504 219076348 236307072 309284256 328614522 396817536 412379008 438152696 618568512 657229044 876305392 1237137024 1314458088 1752610784 2628916176 3505221568 5257832352 7010443136 10515664704 21031329408
• Sum of all divisors σ(n): 61033046400
• Sum of proper divisors (its aliquot sum) s(n): 40001716992
• 21031329408 is an abundant number, because the sum of its proper divisors (40001716992) is greater than itself. Its abundance is 18970387584

Bases of 21031329408

• Binary: 10011100101100100001001111010000000₂
• Hexadecimal: 0x4E5909E80
• Base-36: 9NTIDMO

Squares and roots of 21031329408

• 21031329408 squared (21031329408²) is 442316816667805630464
• 21031329408 cubed (21031329408³) is 9302510674038565122805503885312
• The square root of 21031329408 is 145021.8239024733
• The cube root of 21031329408 is 2760.2954861125

Scales and comparisons

• 21,031,329,408 seconds is equal to 668 years, 38 weeks, 3 hours, 56 minutes, 48 seconds.
• To count from 1 to 21,031,329,408 would take you about one thousand, three hundred thirty-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 21031329408 cubic inches would be around 230 feet tall.

Recreational maths with 21031329408

• 21031329408 backwards is 80492313012
• The number of decimal digits it has is: 11
• The sum of 21031329408's digits is 33
• More coming soon!