61399728

Names of 61399728

• Cardinal: 61399728 can be written as Sixty-one million, three hundred ninety-nine thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 6.1399728 × 10⁷

Factors of 61399728

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 47

Divisors of 61399728

• Number of divisors d(n): 180
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 24 26 27 29 36 39 48 52 54 58 72 78 87 104 108 116 117 144 156 169 174 208 216 232 234 261 312 338 348 351 377 432 464 468 507 522 624 676 696 702 754 783 841 936 1014 1044 1131 1352 1392 1404 1508 1521 1566 1682 1872 2028 2088 2262 2523 2704 2808 3016 3042 3132 3364 3393 4056 4176 4524 4563 4901 5046 5616 6032 6084 6264 6728 6786 7569 8112 9048 9126 9802 10092 10179 10933 12168 12528 13456 13572 14703 15138 18096 18252 19604 20184 20358 21866 22707 24336 27144 29406 30276 32799 36504 39208 40368 40716 43732 44109 45414 54288 58812 60552 65598 73008 78416 81432 87464 88218 90828 98397 117624 121104 131196 132327 142129 162864 174928 176436 181656 196794 235248 262392 264654 284258 295191 352872 363312 393588 426387 524784 529308 568516 590382 705744 787176 852774 1058616 1137032 1180764 1279161 1574352 1705548 2117232 2274064 2361528 2558322 3411096 3837483 4723056 5116644 6822192 7674966 10233288 15349932 20466576 30699864 61399728
• Sum of all divisors σ(n): 197647320
• Sum of proper divisors (its aliquot sum) s(n): 136247592
• 61399728 is an abundant number, because the sum of its proper divisors (136247592) is greater than itself. Its abundance is 74847864

Bases of 61399728

• Binary: 11101010001110001010110000₂
• Hexadecimal: 0x3A8E2B0
• Base-36: 10K0C0

Squares and roots of 61399728

• 61399728 squared (61399728²) is 3769926598473984
• 61399728 cubed (61399728³) is 231472467726267832676352
• The square root of 61399728 is 7835.7978534417
• The cube root of 61399728 is 394.5076983853

Scales and comparisons

• 61,399,728 seconds is equal to 1 year, 49 weeks, 3 days, 15 hours, 28 minutes, 48 seconds.
• To count from 1 to 61,399,728 would take you about two 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 61399728 cubic inches would be around 32.9 feet tall.

Recreational maths with 61399728

• 61399728 backwards is 82799316
• The number of decimal digits it has is: 8
• The sum of 61399728's digits is 45
• More coming soon!