21206671931520

Names of 21206671931520

• Cardinal: 21206671931520 can be written as Twenty-one trillion, two hundred six billion, six hundred seventy-one million, nine hundred thirty-one thousand, five hundred twenty.

Scientific notation

• Scientific notation: 2.120667193152 × 10¹³

Factors of 21206671931520

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 1227237969

Divisors of 21206671931520

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 64 72 80 90 96 108 120 128 135 144 160 180 192 216 240 270 288 320 360 384 432 480 540 576 640 720 864 960 1080 1152 1440 1728 1920 2160 2880 3456 4320 5760 8640 17280 1227237959 2454475918 3681713877 4908951836 6136189795 7363427754 9817903672 11045141631 12272379590 14726855508 18408569385 19635807344 22090283262 24544759180 29453711016 33135424893 36817138770 39271614688 44180566524 49089518360 55225708155 58907422032 66270849786 73634277540 78543229376 88361133048 98179036720 110451416310 117814844064 132541699572 147268555080 157086458752 165677124465 176722266096 196358073440 220902832620 235629688128 265083399144 294537110160 331354248930 353444532192 392716146880 441805665240 471259376256 530166798288 589074220320 662708497860 706889064384 785432293760 883611330480 1060333596576 1178148440640 1325416995720 1413778128768 1767222660960 2120667193152 2356296881280 2650833991440 3534445321920 4241334386304 5301667982880 7068890643840 10603335965760 21206671931520
• Sum of all divisors σ(n): 75106963152000
• Sum of proper divisors (its aliquot sum) s(n): 53900291220480
• 21206671931520 is an abundant number, because the sum of its proper divisors (53900291220480) is greater than itself. Its abundance is 32693619288960

Bases of 21206671931520

• Binary: 100110100100110010000001001011011100010000000₂
• Hexadecimal: 0x13499025B880
• Base-36: 7IM7KXEO0

Squares and roots of 21206671931520

• 21206671931520 squared (21206671931520²) is 449722934411118207569510400
• 21206671931520 cubed (21206671931520³) is 9537126730137070432681149399028727808000
• The square root of 21206671931520 is 4605070.2417574479
• The cube root of 21206671931520 is 27679.4531653249

Scales and comparisons

• 21,206,671,931,520 seconds is equal to 674,306 years, 29 weeks, 4 days, 19 hours, 12 minutes.
• To count from 1 to 21,206,671,931,520 would take you about one million, six hundred eighty-five thousand, seven hundred sixty-six 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 21206671931520 cubic inches would be around 2306.6 feet tall.

Recreational maths with 21206671931520

• 21206671931520 backwards is 02513917660212
• 21206671931520 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21206671931520's digits is 45
• More coming soon!