138990280
138,990,280 is an even composite number composed of five prime numbers multiplied together.
138990280 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 138990280:
23 × 5 × 112 × 13 × 472
(2 × 2 × 2 × 5 × 11 × 11 × 13 × 47 × 47)See below for interesting mathematical facts about the number 138990280 from the Numbermatics database.
Names of 138990280
- Cardinal: 138990280 can be written as One hundred thirty-eight million, nine hundred ninety thousand, two hundred eighty.
Scientific notation
- Scientific notation: 1.3899028 × 108
Factors of 138990280
Divisors of 138990280
- Number of divisors d(n): 144
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Complete list of divisors:
1 2 4 5 8 10 11 13 20 22 26 40 44 47 52 55 65 88 94 104 110 121 130 143 188 220 235 242 260 286 376 440 470 484 517 520 572 605 611 715 940 968 1034 1144 1210 1222 1430 1573 1880 2068 2209 2420 2444 2585 2860 3055 3146 4136 4418 4840 4888 5170 5687 5720 6110 6292 6721 7865 8836 10340 11045 11374 12220 12584 13442 15730 17672 20680 22090 22748 24299 24440 26884 28435 28717 31460 33605 44180 45496 48598 53768 56870 57434 62920 67210 73931 88360 97196 113740 114868 121495 134420 143585 147862 194392 227480 229736 242990 267289 268840 287170 295724 315887 369655 485980 534578 574340 591448 631774 739310 971960 1069156 1148680 1263548 1336445 1478620 1579435 2138312 2527096 2672890 2957240 3158870 3474757 5345780 6317740 6949514 10691560 12635480 13899028 17373785 27798056 34747570 69495140 138990280
- Sum of all divisors σ(n): 378228060
- Sum of proper divisors (its aliquot sum) s(n): 239237780
- 138990280 is an abundant number, because the sum of its proper divisors (239237780) is greater than itself. Its abundance is 100247500
Bases of 138990280
- Binary: 10000100100011010010110010002
- Hexadecimal: 0x848D2C8
- Base-36: 2AR1L4
Squares and roots of 138990280
- 138990280 squared (1389902802) is 19318297934478400
- 138990280 cubed (1389902803) is 2685055639036574469952000
-
The
square root of 138990280 is 11789.4138955249 -
The
cube root of 138990280 is 517.9980719755
Scales and comparisons
How big is 138990280?- 138,990,280 seconds is equal to 4 years, 21 weeks, 5 days, 16 hours, 24 minutes, 40 seconds.
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To count from 1 to 138,990,280 would take you about six 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 138990280 cubic inches would be around 43.2 feet tall.
Recreational maths with 138990280
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