21728632320

Names of 21728632320

• Cardinal: 21728632320 can be written as Twenty-one billion, seven hundred twenty-eight million, six hundred thirty-two thousand, three hundred twenty.

Scientific notation

• Scientific notation: 2.172863232 × 10¹⁰

Factors of 21728632320

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 3891

Divisors of 21728632320

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 64 72 80 81 90 96 108 120 128 135 144 160 162 180 192 216 240 243 256 270 288 320 324 360 384 405 432 480 486 512 540 576 640 648 720 729 768 810 864 960 972 1080 1152 1215 1280 1296 1440 1458 1536 1620 1728 1920 1944 2160 2187 2304 2430 2560 2592 2880 2916 3240 3456 3645 3840 3881 3888 4320 4374 4608 4860 5184 5760 5832 6480 6912 7290 7680 7762 7776 8640 8748 9720 10368 10935 11520 11643 11664 12960 13824 14580 15524 15552 17280 17496 19405 19440 20736 21870 23040 23286 23328 25920 29160 31048 31104 34560 34929 34992 38810 38880 41472 43740 46572 46656 51840 58215 58320 62096 62208 69120 69858 69984 77620 77760 87480 93144 93312 103680 104787 116430 116640 124192 124416 139716 139968 155240 155520 174645 174960 186288 186624 207360 209574 232860 233280 248384 279432 279936 310480 311040 314361 349290 349920 372576 373248 419148 465720 466560 496768 523935 558864 559872 620960 622080 628722 698580 699840 745152 838296 931440 933120 943083 993536 1047870 1117728 1119744 1241920 1257444 1397160 1399680 1490304 1571805 1676592 1862880 1866240 1886166 1987072 2095740 2235456 2483840 2514888 2794320 2799360 2829249 2980608 3143610 3353184 3725760 3772332 4191480 4470912 4715415 4967680 5029776 5588640 5598720 5658498 5961216 6287220 6706368 7451520 7544664 8382960 8487747 8941824 9430830 9935360 10059552 11177280 11316996 12574440 13412736 14146245 14903040 15089328 16765920 16975494 17883648 18861660 20119104 22354560 22633992 25148880 26825472 28292490 29806080 30178656 33531840 33950988 37723320 40238208 42438735 44709120 45267984 50297760 53650944 56584980 60357312 67063680 67901976 75446640 80476416 84877470 89418240 90535968 100595520 113169960 120714624 134127360 135803952 150893280 160952832 169754940 181071936 201191040 226339920 241429248 268254720 271607904 301786560 339509880 362143872 402382080 452679840 482858496 543215808 603573120 679019760 724287744 804764160 905359680 1086431616 1207146240 1358039520 1448575488 1810719360 2172863232 2414292480 2716079040 3621438720 4345726464 5432158080 7242877440 10864316160 21728632320
• Sum of all divisors σ(n): 78154908480
• Sum of proper divisors (its aliquot sum) s(n): 56426276160
• 21728632320 is an abundant number, because the sum of its proper divisors (56426276160) is greater than itself. Its abundance is 34697643840

Bases of 21728632320

• Binary: 10100001111001000001001111000000000₂
• Hexadecimal: 0x50F209E00
• Base-36: 9ZCO000

Squares and roots of 21728632320

• 21728632320 squared (21728632320²) is 472133462497748582400
• 21728632320 cubed (21728632320³) is 10258814412582087774770823168000
• The square root of 21728632320 is 147406.3510165013
• The cube root of 21728632320 is 2790.4706802159

Scales and comparisons

• 21,728,632,320 seconds is equal to 690 years, 46 weeks, 6 days, 19 hours, 12 minutes.
• To count from 1 to 21,728,632,320 would take you about one thousand, three hundred eighty-one 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 21728632320 cubic inches would be around 232.5 feet tall.

Recreational maths with 21728632320

• 21728632320 backwards is 02323682712
• 21728632320 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21728632320's digits is 36
• More coming soon!