72990400
72,990,400 is an even composite number composed of four prime numbers multiplied together.
72990400 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of two hundred ten divisors.
Prime factorization of 72990400:
26 × 52 × 74 × 19
(2 × 2 × 2 × 2 × 2 × 2 × 5 × 5 × 7 × 7 × 7 × 7 × 19)See below for interesting mathematical facts about the number 72990400 from the Numbermatics database.
Names of 72990400
- Cardinal: 72990400 can be written as Seventy-two million, nine hundred ninety thousand, four hundred.
Scientific notation
- Scientific notation: 7.29904 × 107
Factors of 72990400
Divisors of 72990400
- Number of divisors d(n): 210
-
Complete list of divisors:
1 2 4 5 7 8 10 14 16 19 20 25 28 32 35 38 40 49 50 56 64 70 76 80 95 98 100 112 133 140 152 160 175 190 196 200 224 245 266 280 304 320 343 350 380 392 400 448 475 490 532 560 608 665 686 700 760 784 800 931 950 980 1064 1120 1216 1225 1330 1372 1400 1520 1568 1600 1715 1862 1900 1960 2128 2240 2401 2450 2660 2744 2800 3040 3136 3325 3430 3724 3800 3920 4256 4655 4802 4900 5320 5488 5600 6080 6517 6650 6860 7448 7600 7840 8512 8575 9310 9604 9800 10640 10976 11200 12005 13034 13300 13720 14896 15200 15680 17150 18620 19208 19600 21280 21952 23275 24010 26068 26600 27440 29792 30400 32585 34300 37240 38416 39200 42560 45619 46550 48020 52136 53200 54880 59584 60025 65170 68600 74480 76832 78400 91238 93100 96040 104272 106400 109760 120050 130340 137200 148960 153664 162925 182476 186200 192080 208544 212800 228095 240100 260680 274400 297920 325850 364952 372400 384160 417088 456190 480200 521360 548800 651700 729904 744800 768320 912380 960400 1042720 1140475 1303400 1459808 1489600 1824760 1920800 2085440 2280950 2606800 2919616 3649520 3841600 4561900 5213600 7299040 9123800 10427200 14598080 18247600 36495200 72990400
- Sum of all divisors σ(n): 220550740
- Sum of proper divisors (its aliquot sum) s(n): 147560340
- 72990400 is an abundant number, because the sum of its proper divisors (147560340) is greater than itself. Its abundance is 74569940
Bases of 72990400
- Binary: 1000101100110111110110000002
- Hexadecimal: 0x459BEC0
- Base-36: 17GFR4
Squares and roots of 72990400
- 72990400 squared (729904002) is 5327598492160000
- 72990400 cubed (729904003) is 388863544982155264000000
-
The
square root of 72990400 is 8543.4419293397 -
The
cube root of 72990400 is 417.9155984439
Scales and comparisons
How big is 72990400?- 72,990,400 seconds is equal to 2 years, 16 weeks, 4 days, 19 hours, 6 minutes, 40 seconds.
-
To count from 1 to 72,990,400 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 72990400 cubic inches would be around 34.8 feet tall.
Recreational maths with 72990400
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