21178490040

Names of 21178490040

• Cardinal: 21178490040 can be written as Twenty-one billion, one hundred seventy-eight million, four hundred ninety thousand and forty.

Scientific notation

• Scientific notation: 2.117849004 × 10¹⁰

Factors of 21178490040

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 75172

Divisors of 21178490040

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 20 24 27 29 30 36 40 45 54 58 60 72 81 87 90 108 116 120 135 145 162 174 180 216 232 243 261 270 290 324 348 360 405 435 486 522 540 580 648 696 783 810 870 972 1044 1080 1160 1215 1305 1566 1620 1740 1944 2088 2349 2430 2610 3132 3240 3480 3915 4698 4860 5220 6264 7047 7830 9396 9720 10440 11745 14094 15660 18792 23490 28188 31320 35235 46980 56376 70470 75133 93960 140940 150266 225399 281880 300532 375665 450798 601064 676197 751330 901596 1126995 1352394 1502660 1803192 2028591 2178857 2253990 2704788 3005320 3380985 4057182 4357714 4507980 5409576 6085773 6536571 6761970 8114364 8715428 9015960 10142955 10894285 12171546 13073142 13523940 16228728 17430856 18257319 19609713 20285910 21788570 24343092 26146284 27047880 30428865 32682855 36514638 39219426 40571820 43577140 48686184 52292568 58829139 60857730 65365710 73029276 78438852 81143640 87154280 91286595 98048565 117658278 121715460 130731420 146058552 156877704 176487417 182573190 196097130 235316556 243430920 261462840 294145695 352974834 365146380 392194260 470633112 529462251 588291390 705949668 730292760 784388520 882437085 1058924502 1176582780 1411899336 1764874170 2117849004 2353165560 2647311255 3529748340 4235698008 5294622510 7059496680 10589245020 21178490040
• Sum of all divisors σ(n): 73841695200
• Sum of proper divisors (its aliquot sum) s(n): 52663205160
• 21178490040 is an abundant number, because the sum of its proper divisors (52663205160) is greater than itself. Its abundance is 31484715120

Bases of 21178490040

• Binary: 10011101110010101100001110010111000₂
• Hexadecimal: 0x4EE561CB8
• Base-36: 9Q94JI0

Squares and roots of 21178490040

• 21178490040 squared (21178490040²) is 448528440374379201600
• 21178490040 cubed (21178490040³) is 9499155107125523792268752064000
• The square root of 21178490040 is 145528.3135338273
• The cube root of 21178490040 is 2766.7186504643

Scales and comparisons

• 21,178,490,040 seconds is equal to 673 years, 21 weeks, 2 days, 9 hours, 54 minutes.
• To count from 1 to 21,178,490,040 would take you about one thousand, three hundred forty-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 21178490040 cubic inches would be around 230.6 feet tall.

Recreational maths with 21178490040

• 21178490040 backwards is 04009487112
• 21178490040 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21178490040's digits is 36
• More coming soon!