21028151040

Names of 21028151040

• Cardinal: 21028151040 can be written as Twenty-one billion, twenty-eight million, one hundred fifty-one thousand and forty.

Scientific notation

• Scientific notation: 2.102815104 × 10¹⁰

Factors of 21028151040

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 4845

Divisors of 21028151040

• Number of divisors d(n): 288
• 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 96 104 120 128 130 156 160 178 192 195 208 240 256 260 267 312 320 356 384 390 416 445 480 520 534 624 640 712 768 780 832 890 960 1040 1068 1157 1248 1280 1335 1424 1560 1664 1780 1920 2080 2136 2314 2496 2670 2848 3120 3328 3471 3560 3840 4160 4272 4628 4733 4992 5340 5696 5785 6240 6942 7120 8320 8544 9256 9466 9984 10680 11392 11570 12480 13884 14199 14240 16640 17088 17355 18512 18932 21360 22784 23140 23665 24960 27768 28398 28480 34176 34710 37024 37864 42720 46280 47330 49920 55536 56796 56960 61529 68352 69420 70995 74048 75728 85440 92560 94660 111072 113592 113920 123058 138840 141990 148096 151456 170880 184587 185120 189320 222144 227184 246116 277680 283980 296192 302912 307645 341760 369174 370240 378640 421237 444288 454368 492232 555360 567960 605824 615290 738348 740480 757280 842474 888576 908736 922935 984464 1110720 1135920 1211648 1230580 1263711 1476696 1480960 1514560 1684948 1817472 1845870 1968928 2106185 2221440 2271840 2461160 2527422 2953392 3029120 3369896 3634944 3691740 3937856 4212370 4442880 4543680 4922320 5054844 5476081 5906784 6058240 6318555 6739792 7383480 7875712 8424740 9087360 9844640 10109688 10952162 11813568 12637110 13479584 14766960 15751424 16428243 16849480 18174720 19689280 20219376 21904324 23627136 25274220 26959168 27380405 29533920 32856486 33698960 39378560 40438752 43808648 47254272 50548440 53918336 54760810 59067840 65712972 67397920 78757120 80877504 82141215 87617296 101096880 107836672 109521620 118135680 131425944 134795840 161755008 164282430 175234592 202193760 219043240 236271360 262851888 269591680 323510016 328564860 350469184 404387520 438086480 525703776 539183360 657129720 700938368 808775040 876172960 1051407552 1314259440 1401876736 1617550080 1752345920 2102815104 2628518880 3504691840 4205630208 5257037760 7009383680 10514075520 21028151040
• Sum of all divisors σ(n): 73152797760
• Sum of proper divisors (its aliquot sum) s(n): 52124646720
• 21028151040 is an abundant number, because the sum of its proper divisors (52124646720) is greater than itself. Its abundance is 31096495680

Bases of 21028151040

• Binary: 10011100101011000000001111100000000₂
• Hexadecimal: 0x4E5601F00
• Base-36: 9NRM96O

Squares and roots of 21028151040

• 21028151040 squared (21028151040²) is 442183136161053081600
• 21028151040 cubed (21028151040³) is 9298293774535509965342244864000
• The square root of 21028151040 is 145010.8652480909
• The cube root of 21028151040 is 2760.1564288571

Scales and comparisons

• 21,028,151,040 seconds is equal to 668 years, 32 weeks, 5 days, 9 hours, 4 minutes.
• To count from 1 to 21,028,151,040 would take you about one thousand, three hundred thirty-seven 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 21028151040 cubic inches would be around 230 feet tall.

Recreational maths with 21028151040

• 21028151040 backwards is 04015182012
• 21028151040 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21028151040's digits is 24
• More coming soon!