72161137920

Names of 72161137920

• Cardinal: 72161137920 can be written as Seventy-two billion, one hundred sixty-one million, one hundred thirty-seven thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 7.216113792 × 10¹⁰

Factors of 72161137920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 238

Divisors of 72161137920

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 47 48 60 64 80 94 96 120 128 141 160 181 188 192 235 240 256 282 320 362 376 384 470 480 543 564 640 705 724 752 768 905 940 960 1086 1128 1280 1410 1448 1504 1810 1880 1920 2172 2209 2256 2715 2820 2896 3008 3620 3760 3840 4344 4418 4512 5430 5640 5792 6016 6627 7240 7520 8507 8688 8836 9024 10860 11045 11280 11584 12032 13254 14480 15040 17014 17376 17672 18048 21720 22090 22560 23168 25521 26508 28960 30080 33135 34028 34752 35344 36096 42535 43440 44180 45120 46336 51042 53016 57920 60160 66270 68056 69504 70688 85070 86880 88360 90240 102084 103823 106032 115840 127605 132540 136112 139008 141376 170140 173760 176720 180480 204168 207646 212064 231680 255210 265080 272224 282752 311469 340280 347520 353440 399829 408336 415292 424128 510420 519115 530160 544448 565504 622938 680560 695040 706880 799658 816672 830584 848256 1020840 1038230 1060320 1088896 1199487 1245876 1361120 1413760 1557345 1599316 1633344 1661168 1696512 1999145 2041680 2076460 2120640 2177792 2398974 2491752 2722240 2827520 3114690 3198632 3266688 3322336 3998290 4083360 4152920 4241280 4797948 4983504 5444480 5997435 6229380 6397264 6533376 6644672 7996580 8166720 8305840 8482560 9595896 9967008 10888960 11994870 12458760 12794528 13289344 15993160 16333440 16611680 18791963 19191792 19934016 23989740 24917520 25589056 26578688 31986320 32666880 33223360 37583926 38383584 39868032 47979480 49835040 51178112 56375889 63972640 66446720 75167852 76767168 79736064 93959815 95958960 99670080 102356224 112751778 127945280 132893440 150335704 153534336 187919630 191917920 199340160 225503556 255890560 281879445 300671408 307068672 375839260 383835840 398680320 451007112 511781120 563758890 601342816 751678520 767671680 902014224 1127517780 1202685632 1503357040 1535343360 1804028448 2255035560 2405371264 3006714080 3608056896 4510071120 4810742528 6013428160 7216113792 9020142240 12026856320 14432227584 18040284480 24053712640 36080568960 72161137920
• Sum of all divisors σ(n): 236775651840
• Sum of proper divisors (its aliquot sum) s(n): 164614513920
• 72161137920 is an abundant number, because the sum of its proper divisors (164614513920) is greater than itself. Its abundance is 92453376000

Bases of 72161137920

• Binary: 1000011001101001000111001010100000000₂
• Hexadecimal: 0x10CD239500
• Base-36: X5EVMDC

Squares and roots of 72161137920

• 72161137920 squared (72161137920²) is 5207229825909261926400
• 72161137920 cubed (72161137920³) is 375759629648575839276355289088000
• The square root of 72161137920 is 268628.2522744025
• The cube root of 72161137920 is 4163.2688557665

Scales and comparisons

• 72,161,137,920 seconds is equal to 2,294 years, 26 weeks, 8 hours, 32 minutes.
• To count from 1 to 72,161,137,920 would take you about four thousand, five hundred eighty-nine 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 72161137920 cubic inches would be around 346.9 feet tall.

Recreational maths with 72161137920

• 72161137920 backwards is 02973116127
• The number of decimal digits it has is: 11
• The sum of 72161137920's digits is 39
• More coming soon!