21398789376

Names of 21398789376

• Cardinal: 21398789376 can be written as Twenty-one billion, three hundred ninety-eight million, seven hundred eighty-nine thousand, three hundred seventy-six.

Scientific notation

• Scientific notation: 2.1398789376 × 10¹⁰

Factors of 21398789376

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 25679

Divisors of 21398789376

• Number of divisors d(n): 108
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 32 36 48 64 72 96 128 144 192 256 288 367 384 576 734 768 1101 1152 1468 2202 2304 2936 3303 4404 5872 6606 8808 11744 13212 17616 23488 25307 26424 35232 46976 50614 52848 70464 75921 93952 101228 105696 140928 151842 202456 211392 227763 281856 303684 404912 422784 455526 607368 809824 845568 911052 1214736 1619648 1822104 2429472 3239296 3644208 4858944 6478592 7288416 9287669 9717888 14576832 18575338 19435776 27863007 29153664 37150676 55726014 58307328 74301352 83589021 111452028 148602704 167178042 222904056 297205408 334356084 445808112 594410816 668712168 891616224 1188821632 1337424336 1783232448 2377643264 2674848672 3566464896 5349697344 7132929792 10699394688 21398789376
• Sum of all divisors σ(n): 61868544192
• Sum of proper divisors (its aliquot sum) s(n): 40469754816
• 21398789376 is an abundant number, because the sum of its proper divisors (40469754816) is greater than itself. Its abundance is 19070965440

Bases of 21398789376

• Binary: 10011111011011101111001110100000000₂
• Hexadecimal: 0x4FB779D00
• Base-36: 9TWABK0

Squares and roots of 21398789376

• 21398789376 squared (21398789376²) is 457908186758410469376
• 21398789376 cubed (21398789376³) is 9798680841989297830730322149376
• The square root of 21398789376 is 146283.2504971093
• The cube root of 21398789376 is 2776.2787440839

Scales and comparisons

• 21,398,789,376 seconds is equal to 680 years, 21 weeks, 4 days, 4 hours, 9 minutes, 36 seconds.
• To count from 1 to 21,398,789,376 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 21398789376 cubic inches would be around 231.4 feet tall.

Recreational maths with 21398789376

• 21398789376 backwards is 67398789312
• The number of decimal digits it has is: 11
• The sum of 21398789376's digits is 63
• More coming soon!