221473728

Names of 221473728

• Cardinal: 221473728 can be written as Two hundred twenty-one million, four hundred seventy-three thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 2.21473728 × 10⁸

Factors of 221473728

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 90

Divisors of 221473728

• Number of divisors d(n): 336
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 19 21 24 28 32 36 38 42 48 49 56 57 59 63 64 72 76 84 96 98 112 114 118 126 133 144 147 152 168 171 177 192 196 224 228 236 252 266 288 294 304 336 342 343 354 392 399 413 441 448 456 472 504 531 532 576 588 608 672 684 686 708 784 798 826 882 912 931 944 1008 1029 1062 1064 1121 1176 1197 1216 1239 1344 1368 1372 1416 1568 1596 1652 1764 1824 1862 1888 2016 2058 2124 2128 2242 2352 2394 2478 2736 2744 2793 2832 2891 3087 3136 3192 3304 3363 3528 3648 3717 3724 3776 4032 4116 4248 4256 4484 4704 4788 4956 5472 5488 5586 5664 5782 6174 6384 6517 6608 6726 7056 7434 7448 7847 8232 8379 8496 8512 8673 8968 9408 9576 9912 10089 10944 10976 11172 11328 11564 12348 12768 13034 13216 13452 14112 14868 14896 15694 16464 16758 16992 17346 17936 19152 19551 19824 20178 20237 21952 22344 23128 23541 24696 25536 26019 26068 26432 26904 28224 29736 29792 31388 32928 33516 33984 34692 35872 38304 39102 39648 40356 40474 44688 46256 47082 49392 52038 52136 53808 54929 58653 59472 59584 60711 62776 65856 67032 69384 70623 71744 76608 78204 79296 80712 80948 89376 92512 94164 98784 104076 104272 107616 109858 117306 118944 121422 125552 134064 138768 141246 156408 161424 161896 164787 178752 182133 185024 188328 197568 208152 208544 215232 219716 234612 237888 242844 251104 268128 277536 282492 312816 322848 323792 329574 364266 376656 384503 416304 417088 439432 469224 485688 494361 502208 536256 555072 564984 625632 645696 647584 659148 728532 753312 769006 832608 878864 938448 971376 988722 1129968 1153509 1251264 1295168 1318296 1457064 1506624 1538012 1665216 1757728 1876896 1942752 1977444 2259936 2307018 2636592 2914128 3076024 3460527 3515456 3753792 3885504 3954888 4519872 4614036 5273184 5828256 6152048 6921054 7909776 9228072 10546368 11656512 12304096 13842108 15819552 18456144 24608192 27684216 31639104 36912288 55368432 73824576 110736864 221473728
• Sum of all divisors σ(n): 792480000
• Sum of proper divisors (its aliquot sum) s(n): 571006272
• 221473728 is an abundant number, because the sum of its proper divisors (571006272) is greater than itself. Its abundance is 349532544

Bases of 221473728

• Binary: 1101001100110110101111000000₂
• Hexadecimal: 0xD336BC0
• Base-36: 3NUY80

Squares and roots of 221473728

• 221473728 squared (221473728²) is 49050612194217984
• 221473728 cubed (221473728³) is 10863421943335716961124352
• The square root of 221473728 is 14881.9934148621
• The cube root of 221473728 is 605.0260471903

Scales and comparisons

• 221,473,728 seconds is equal to 7 years, 2 weeks, 1 day, 8 hours, 28 minutes, 48 seconds.
• To count from 1 to 221,473,728 would take you about ten 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 221473728 cubic inches would be around 50.4 feet tall.

Recreational maths with 221473728

• 221473728 backwards is 827374122
• 221473728 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 221473728's digits is 36
• More coming soon!