21021486720
21,021,486,720 is an even composite number composed of six prime numbers multiplied together.
21021486720 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred fifty-six divisors.
Prime factorization of 21021486720:
27 × 3 × 5 × 13 × 89 × 9463
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 13 × 89 × 9463)See below for interesting mathematical facts about the number 21021486720 from the Numbermatics database.
Names of 21021486720
- Cardinal: 21021486720 can be written as Twenty-one billion, twenty-one million, four hundred eighty-six thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.102148672 × 1010
Factors of 21021486720
Divisors of 21021486720
- Number of divisors d(n): 256
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Complete list of divisors:
1 2 3 4 5 6 8 10 12 13 15 16 20 24 26 30 32 39 40 48 52 60 64 65 78 80 89 96 104 120 128 130 156 160 178 192 195 208 240 260 267 312 320 356 384 390 416 445 480 520 534 624 640 712 780 832 890 960 1040 1068 1157 1248 1335 1424 1560 1664 1780 1920 2080 2136 2314 2496 2670 2848 3120 3471 3560 4160 4272 4628 4992 5340 5696 5785 6240 6942 7120 8320 8544 9256 9463 10680 11392 11570 12480 13884 14240 17088 17355 18512 18926 21360 23140 24960 27768 28389 28480 34176 34710 37024 37852 42720 46280 47315 55536 56778 56960 69420 74048 75704 85440 92560 94630 111072 113556 123019 138840 141945 148096 151408 170880 185120 189260 222144 227112 246038 277680 283890 302816 369057 370240 378520 444288 454224 492076 555360 567780 605632 615095 738114 740480 757040 842207 908448 984152 1110720 1135560 1211264 1230190 1476228 1514080 1684414 1816896 1845285 1968304 2221440 2271120 2460380 2526621 2952456 3028160 3368828 3633792 3690570 3936608 4211035 4542240 4920760 5053242 5904912 6056320 6737656 7381140 7873216 8422070 9084480 9841520 10106484 10948691 11809824 12633105 13475312 14762280 15746432 16844140 18168960 19683040 20212968 21897382 23619648 25266210 26950624 29524560 32846073 33688280 39366080 40425936 43794764 47239296 50532420 53901248 54743455 59049120 65692146 67376560 78732160 80851872 87589528 101064840 107802496 109486910 118098240 131384292 134753120 161703744 164230365 175179056 202129680 218973820 236196480 262768584 269506240 323407488 328460730 350358112 404259360 437947640 525537168 539012480 656921460 700716224 808518720 875895280 1051074336 1313842920 1401432448 1617037440 1751790560 2102148672 2627685840 3503581120 4204297344 5255371680 7007162240 10510743360 21021486720
- Sum of all divisors σ(n): 72978796800
- Sum of proper divisors (its aliquot sum) s(n): 51957310080
- 21021486720 is an abundant number, because the sum of its proper divisors (51957310080) is greater than itself. Its abundance is 30935823360
Bases of 21021486720
- Binary: 100111001001111101001101110100000002
- Hexadecimal: 0x4E4FA6E80
- Base-36: 9NNNEYO
Squares and roots of 21021486720
- 21021486720 squared (210214867202) is 441902903919136358400
- 21021486720 cubed (210214867203) is 9289456026265560911974760448000
-
The
square root of 21021486720 is 144987.8847352427 -
The
cube root of 21021486720 is 2759.8648116939
Scales and comparisons
How big is 21021486720?- 21,021,486,720 seconds is equal to 668 years, 21 weeks, 5 days, 5 hours, 52 minutes.
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To count from 1 to 21,021,486,720 would take you about one thousand, three hundred thirty-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 21021486720 cubic inches would be around 230 feet tall.
Recreational maths with 21021486720
- 21021486720 backwards is 02768412012
- The number of decimal digits it has is: 11
- The sum of 21021486720's digits is 33
- More coming soon!
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