21429313920

Names of 21429313920

• Cardinal: 21429313920 can be written as Twenty-one billion, four hundred twenty-nine million, three hundred thirteen thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.142931392 × 10¹⁰

Factors of 21429313920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 531498

Divisors of 21429313920

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 28 30 32 35 36 40 42 45 48 56 60 63 64 70 72 80 84 90 96 105 112 120 126 128 140 144 160 168 180 192 210 224 240 252 280 288 315 320 336 360 384 420 448 480 504 560 576 630 640 672 720 840 896 960 1008 1120 1152 1260 1344 1440 1680 1920 2016 2240 2520 2688 2880 3360 4032 4480 5040 5760 6720 8064 10080 13440 20160 40320 531481 1062962 1594443 2125924 2657405 3188886 3720367 4251848 4783329 5314810 6377772 7440734 7972215 8503696 9566658 10629620 11161101 12755544 14881468 15944430 17007392 18601835 19133316 21259240 22322202 23916645 25511088 29762936 31888860 33483303 34014784 37203670 38266632 42518480 44644404 47833290 51022176 55805505 59525872 63777720 66966606 68029568 74407340 76533264 85036960 89288808 95666580 102044352 111611010 119051744 127555440 133933212 148814680 153066528 167416515 170073920 178577616 191333160 204088704 223222020 238103488 255110880 267866424 297629360 306133056 334833030 340147840 357155232 382666320 446444040 476206976 510221760 535732848 595258720 612266112 669666060 714310464 765332640 892888080 1020443520 1071465696 1190517440 1339332120 1428620928 1530665280 1785776160 2142931392 2381034880 2678664240 3061330560 3571552320 4285862784 5357328480 7143104640 10714656960 21429313920
• Sum of all divisors σ(n): 84569415840
• Sum of proper divisors (its aliquot sum) s(n): 63140101920
• 21429313920 is an abundant number, because the sum of its proper divisors (63140101920) is greater than itself. Its abundance is 41710788000

Bases of 21429313920

• Binary: 10011111101010010010110000110000000₂
• Hexadecimal: 0x4FD496180
• Base-36: 9UEGKG0

Squares and roots of 21429313920

• 21429313920 squared (21429313920²) is 459215495081905766400
• 21429313920 cubed (21429313920³) is 9840673001038374780043788288000
• The square root of 21429313920 is 146387.5470113493
• The cube root of 21429313920 is 2777.5982015869

Scales and comparisons

• 21,429,313,920 seconds is equal to 681 years, 20 weeks, 11 hours, 12 minutes.
• To count from 1 to 21,429,313,920 would take you about one thousand, three hundred sixty-two 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 21429313920 cubic inches would be around 231.5 feet tall.

Recreational maths with 21429313920

• 21429313920 backwards is 02931392412
• 21429313920 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21429313920's digits is 36
• More coming soon!