21388029376

Names of 21388029376

• Cardinal: 21388029376 can be written as Twenty-one billion, three hundred eighty-eight million, twenty-nine thousand, three hundred seventy-six.

Scientific notation

• Scientific notation: 2.1388029376 × 10¹⁰

Factors of 21388029376

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 900

Divisors of 21388029376

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 4 7 8 14 16 28 32 37 43 56 64 74 86 112 148 172 224 259 296 301 344 448 518 592 602 688 811 1036 1184 1204 1369 1376 1591 1622 2072 2368 2408 2738 2752 3182 3244 4144 4816 5476 5677 6364 6488 8288 9583 9632 10952 11137 11354 12728 12976 16576 19166 19264 21904 22274 22708 25456 25952 30007 34873 38332 43808 44548 45416 50912 51904 58867 60014 69746 76664 87616 89096 90832 101824 117734 120028 139492 153328 178192 181664 210049 235468 240056 244111 278984 306656 356384 363328 412069 420098 470936 480112 488222 557968 613312 712768 824138 840196 941872 960224 976444 1110259 1115936 1290301 1648276 1680392 1883744 1920448 1952888 2220518 2231872 2580602 3296552 3360784 3767488 3905776 4441036 5161204 6593104 6721568 7771813 7811552 8882072 9032107 10322408 13186208 13443136 15543626 15623104 17764144 18064214 20644816 26372416 31087252 35528288 36128428 41289632 47741137 62174504 71056576 72256856 82579264 95482274 124349008 144513712 190964548 248698016 289027424 334187959 381929096 497396032 578054848 668375918 763858192 1336751836 1527716384 2673503672 3055432768 5347007344 10694014688 21388029376
• Sum of all divisors σ(n): 51073604736
• Sum of proper divisors (its aliquot sum) s(n): 29685575360
• 21388029376 is an abundant number, because the sum of its proper divisors (29685575360) is greater than itself. Its abundance is 8297545984

Bases of 21388029376

• Binary: 10011111010110100110110110111000000₂
• Hexadecimal: 0x4FAD36DC0
• Base-36: 9TPVP34

Squares and roots of 21388029376

• 21388029376 squared (21388029376²) is 457447800588638949376
• 21388029376 cubed (21388029376³) is 9783906996976399941111664869376
• The square root of 21388029376 is 146246.4679094847
• The cube root of 21388029376 is 2775.8133319657

Scales and comparisons

• 21,388,029,376 seconds is equal to 680 years, 3 weeks, 5 days, 15 hours, 16 minutes, 16 seconds.
• To count from 1 to 21,388,029,376 would take you about one thousand, three hundred sixty 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 21388029376 cubic inches would be around 231.3 feet tall.

Recreational maths with 21388029376

• 21388029376 backwards is 67392088312
• The number of decimal digits it has is: 11
• The sum of 21388029376's digits is 49
• More coming soon!