72121764
72,121,764 is an even composite number composed of six prime numbers multiplied together.
72121764 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 72121764:
22 × 3 × 11 × 132 × 53 × 61
(2 × 2 × 3 × 11 × 13 × 13 × 53 × 61)See below for interesting mathematical facts about the number 72121764 from the Numbermatics database.
Names of 72121764
- Cardinal: 72121764 can be written as Seventy-two million, one hundred twenty-one thousand, seven hundred sixty-four.
Scientific notation
- Scientific notation: 7.2121764 × 107
Factors of 72121764
Divisors of 72121764
- Number of divisors d(n): 144
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Complete list of divisors:
1 2 3 4 6 11 12 13 22 26 33 39 44 52 53 61 66 78 106 122 132 143 156 159 169 183 212 244 286 318 338 366 429 507 572 583 636 671 676 689 732 793 858 1014 1166 1342 1378 1586 1716 1749 1859 2013 2028 2067 2332 2379 2684 2756 3172 3233 3498 3718 4026 4134 4758 5577 6466 6996 7436 7579 8052 8268 8723 8957 9516 9699 10309 11154 12932 15158 17446 17914 19398 20618 22308 22737 26169 26871 30316 30927 34892 35563 35828 38796 41236 42029 45474 52338 53742 61854 71126 84058 90948 98527 104676 106689 107484 113399 123708 126087 142252 168116 197054 213378 226798 252174 295581 340197 394108 426756 453596 462319 504348 546377 591162 680394 924638 1092754 1182324 1360788 1386957 1639131 1849276 2185508 2773914 3278262 5547828 6010147 6556524 12020294 18030441 24040588 36060882 72121764
- Sum of all divisors σ(n): 205861824
- Sum of proper divisors (its aliquot sum) s(n): 133740060
- 72121764 is an abundant number, because the sum of its proper divisors (133740060) is greater than itself. Its abundance is 61618296
Bases of 72121764
- Binary: 1000100110001111101101001002
- Hexadecimal: 0x44C7DA4
- Base-36: 16XTIC
Squares and roots of 72121764
- 72121764 squared (721217642) is 5201548842471696
- 72121764 cubed (721217643) is 375144878051216835591744
-
The
square root of 72121764 is 8492.4533557739 -
The
cube root of 72121764 is 416.2511504265
Scales and comparisons
How big is 72121764?- 72,121,764 seconds is equal to 2 years, 15 weeks, 1 day, 17 hours, 49 minutes, 24 seconds.
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To count from 1 to 72,121,764 would take you about three 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 72121764 cubic inches would be around 34.7 feet tall.
Recreational maths with 72121764
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