72451998729

Names of 72451998729

• Cardinal: 72451998729 can be written as Seventy-two billion, four hundred fifty-one million, nine hundred ninety-eight thousand, seven hundred twenty-nine.

Scientific notation

• Scientific notation: 7.2451998729 × 10¹⁰

Factors of 72451998729

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 749

Divisors of 72451998729

• Number of divisors d(n): 120
• Complete list of divisors:
  1 3 9 11 19 33 43 57 99 121 129 171 209 363 387 473 627 673 817 1089 1331 1419 1881 2019 2299 2451 3993 4257 5203 6057 6897 7353 7403 8987 11979 12787 14641 15609 20691 22209 25289 26961 28939 38361 43923 46827 57233 66627 75867 80883 81433 86817 98857 115083 131769 140657 171699 227601 244299 260451 278179 296571 318329 421971 515097 549841 629563 732897 834537 889713 895763 954987 1087427 1265913 1547227 1649523 1888689 2503611 2687289 2864961 3262281 3501619 4641681 4948569 5666067 6048251 8061867 9786843 9853393 10504857 11961697 13925043 17019497 18144753 29560179 31514571 35885091 38517809 51058491 54434259 66530761 88680537 107655273 115553427 153175473 187214467 199592283 346660281 423695899 561643401 598776849 731838371 1271087697 1684930203 2195515113 3813263091 6586545339 8050222081 24150666243 72451998729
• Sum of all divisors σ(n): 124178568800
• Sum of proper divisors (its aliquot sum) s(n): 51726570071
• 72451998729 is a deficient number, because the sum of its proper divisors (51726570071) is less than itself. Its deficiency is 20725428658

Bases of 72451998729

• Binary: 1000011011110011110011100010000001001₂
• Hexadecimal: 0x10DE79C409
• Base-36: XA81S09

Squares and roots of 72451998729

• 72451998729 squared (72451998729²) is 5249292119827017615441
• 72451998729 cubed (72451998729³) is 380321705993856795973791942774489
• The square root of 72451998729 is 269169.0894753703
• The cube root of 72451998729 is 4168.8550038567

Scales and comparisons

• 72,451,998,729 seconds is equal to 2,303 years, 38 weeks, 6 days, 19 hours, 12 minutes, 9 seconds.
• To count from 1 to 72,451,998,729 would take you about four thousand, six hundred seven 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 72451998729 cubic inches would be around 347.4 feet tall.

Recreational maths with 72451998729

• 72451998729 backwards is 92789915427
• The number of decimal digits it has is: 11
• The sum of 72451998729's digits is 63
• More coming soon!