21461978240

Names of 21461978240

• Cardinal: 21461978240 can be written as Twenty-one billion, four hundred sixty-one million, nine hundred seventy-eight thousand, two hundred forty.

Scientific notation

• Scientific notation: 2.146197824 × 10¹⁰

Factors of 21461978240

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 127777

Divisors of 21461978240

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 5 8 10 16 20 32 40 64 80 128 160 263 320 526 640 1052 1315 2104 2630 4208 5260 8416 10520 16832 21040 33664 42080 84160 127507 168320 255014 510028 637535 1020056 1275070 2040112 2550140 4080224 5100280 8160448 10200560 16320896 20401120 33534341 40802240 67068682 81604480 134137364 167671705 268274728 335343410 536549456 670686820 1073098912 1341373640 2146197824 2682747280 4292395648 5365494560 10730989120 21461978240
• Sum of all divisors σ(n): 51503031360
• Sum of proper divisors (its aliquot sum) s(n): 30041053120
• 21461978240 is an abundant number, because the sum of its proper divisors (30041053120) is greater than itself. Its abundance is 8579074880

Bases of 21461978240

• Binary: 10011111111001110111100110010000000₂
• Hexadecimal: 0x4FF3BCC80
• Base-36: 9UXWOE8

Squares and roots of 21461978240

• 21461978240 squared (21461978240²) is 460616509974233497600
• 21461978240 cubed (21461978240³) is 9885741514051742286170292224000
• The square root of 21461978240 is 146499.0724885317
• The cube root of 21461978240 is 2779.0087662195

Scales and comparisons

• 21,461,978,240 seconds is equal to 682 years, 22 weeks, 12 hours, 37 minutes, 20 seconds.
• To count from 1 to 21,461,978,240 would take you about one thousand, three hundred sixty-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 21461978240 cubic inches would be around 231.6 feet tall.

Recreational maths with 21461978240

• 21461978240 backwards is 04287916412
• The number of decimal digits it has is: 11
• The sum of 21461978240's digits is 44
• More coming soon!