21097440
21,097,440 is an even composite number composed of six prime numbers multiplied together.
21097440 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of four hundred thirty-two divisors.
Prime factorization of 21097440:
25 × 32 × 5 × 72 × 13 × 23
(2 × 2 × 2 × 2 × 2 × 3 × 3 × 5 × 7 × 7 × 13 × 23)See below for interesting mathematical facts about the number 21097440 from the Numbermatics database.
Names of 21097440
- Cardinal: 21097440 can be written as Twenty-one million, ninety-seven thousand, four hundred forty.
Scientific notation
- Scientific notation: 2.109744 × 107
Factors of 21097440
Divisors of 21097440
- Number of divisors d(n): 432
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Complete list of divisors:
1 2 3 4 5 6 7 8 9 10 12 13 14 15 16 18 20 21 23 24 26 28 30 32 35 36 39 40 42 45 46 48 49 52 56 60 63 65 69 70 72 78 80 84 90 91 92 96 98 104 105 112 115 117 120 126 130 138 140 144 147 156 160 161 168 180 182 184 195 196 207 208 210 224 230 234 240 245 252 260 273 276 280 288 294 299 312 315 322 336 345 360 364 368 390 392 414 416 420 441 455 460 468 480 483 490 504 520 546 552 560 585 588 598 624 630 637 644 672 690 720 728 735 736 780 784 805 819 828 840 882 897 910 920 936 966 980 1008 1035 1040 1092 1104 1120 1127 1170 1176 1196 1248 1260 1274 1288 1365 1380 1440 1449 1456 1470 1495 1560 1568 1610 1638 1656 1680 1764 1794 1820 1840 1872 1911 1932 1960 2016 2070 2080 2093 2184 2205 2208 2254 2340 2352 2392 2415 2520 2548 2576 2691 2730 2760 2898 2912 2940 2990 3120 3185 3220 3276 3312 3360 3381 3528 3588 3640 3680 3744 3822 3864 3920 4095 4140 4186 4368 4410 4485 4508 4680 4704 4784 4830 5040 5096 5152 5382 5460 5520 5635 5733 5796 5880 5980 6240 6279 6370 6440 6552 6624 6762 7056 7176 7245 7280 7644 7728 7840 8190 8280 8372 8736 8820 8970 9016 9360 9555 9568 9660 10080 10143 10192 10465 10764 10920 11040 11270 11466 11592 11760 11960 12558 12740 12880 13104 13455 13524 14112 14352 14490 14560 14651 15288 15456 16380 16560 16744 16905 17640 17940 18032 18720 18837 19110 19320 20286 20384 20930 21528 21840 22540 22932 23184 23520 23920 25116 25480 25760 26208 26910 27048 28665 28704 28980 29302 30576 31395 32760 33120 33488 33810 35280 35880 36064 37674 38220 38640 40572 41860 43056 43680 43953 45080 45864 46368 47840 50232 50715 50960 53820 54096 57330 57960 58604 61152 62790 65520 66976 67620 70560 71760 73255 75348 76440 77280 81144 83720 86112 87906 90160 91728 94185 100464 101430 101920 107640 108192 114660 115920 117208 125580 131040 131859 135240 143520 146510 150696 152880 162288 167440 175812 180320 183456 188370 200928 202860 215280 219765 229320 231840 234416 251160 263718 270480 293020 301392 305760 324576 334880 351624 376740 405720 430560 439530 458640 468832 502320 527436 540960 586040 602784 659295 703248 753480 811440 879060 917280 1004640 1054872 1172080 1318590 1406496 1506960 1622880 1758120 2109744 2344160 2637180 3013920 3516240 4219488 5274360 7032480 10548720 21097440
- Sum of all divisors σ(n): 94112928
- Sum of proper divisors (its aliquot sum) s(n): 73015488
- 21097440 is an abundant number, because the sum of its proper divisors (73015488) is greater than itself. Its abundance is 51918048
Bases of 21097440
- Binary: 10100000111101011111000002
- Hexadecimal: 0x141EBE0
- Base-36: CK6W0
Squares and roots of 21097440
- 21097440 squared (210974402) is 445101974553600
- 21097440 cubed (210974403) is 9390512202026102784000
-
The
square root of 21097440 is 4593.1949664695 -
The
cube root of 21097440 is 276.3184729563
Scales and comparisons
How big is 21097440?- 21,097,440 seconds is equal to 34 weeks, 6 days, 4 hours, 24 minutes.
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To count from 1 to 21,097,440 would take you about two days!
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 21097440 cubic inches would be around 23 feet tall.
Recreational maths with 21097440
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