21394206720

Names of 21394206720

• Cardinal: 21394206720 can be written as Twenty-one billion, three hundred ninety-four million, two hundred six thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.139420672 × 10¹⁰

Factors of 21394206720

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 219

Divisors of 21394206720

• Number of divisors d(n): 624
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 19 20 24 30 32 36 38 40 41 45 48 57 60 64 72 76 80 82 90 95 96 114 120 123 128 144 149 152 160 164 171 180 190 192 205 228 240 246 256 285 288 298 304 320 328 342 360 369 380 384 410 447 456 480 492 512 570 576 596 608 615 640 656 684 720 738 745 760 768 779 820 855 894 912 960 984 1024 1140 1152 1192 1216 1230 1280 1312 1341 1368 1440 1476 1490 1520 1536 1558 1640 1710 1788 1824 1845 1920 1968 2048 2235 2280 2304 2337 2384 2432 2460 2560 2624 2682 2736 2831 2880 2952 2980 3040 3072 3116 3280 3420 3576 3648 3690 3840 3895 3936 4096 4470 4560 4608 4674 4768 4864 4920 5120 5248 5364 5472 5662 5760 5904 5960 6080 6109 6144 6232 6560 6705 6840 7011 7152 7296 7380 7680 7790 7872 8493 8940 9120 9216 9348 9536 9728 9840 10240 10496 10728 10944 11324 11520 11685 11808 11920 12160 12218 12288 12464 13120 13410 13680 14022 14155 14304 14592 14760 15360 15580 15744 16986 17880 18240 18327 18432 18696 19072 19456 19680 20480 20992 21456 21888 22648 23040 23370 23616 23840 24320 24436 24928 25479 26240 26820 27360 28044 28310 28608 29184 29520 30545 30720 31160 31488 33972 35055 35760 36480 36654 36864 37392 38144 38912 39360 41984 42465 42912 43776 45296 46080 46740 47232 47680 48640 48872 49856 50958 52480 53640 54720 54981 56088 56620 57216 58368 59040 61090 61440 62320 62976 67944 70110 71520 72960 73308 74784 76288 77824 78720 83968 84930 85824 87552 90592 91635 92160 93480 94464 95360 97280 97744 99712 101916 104960 107280 109440 109962 112176 113240 114432 116071 116736 118080 122180 124640 125952 127395 135888 140220 143040 145920 146616 149568 152576 157440 167936 169860 171648 175104 181184 183270 184320 186960 188928 190720 194560 195488 199424 203832 209920 214560 218880 219924 224352 226480 228864 232142 233472 236160 244360 249280 251904 254790 271776 274905 280440 286080 291840 293232 299136 305152 314880 339720 343296 348213 350208 362368 366540 373920 377856 381440 389120 390976 398848 407664 419840 429120 437760 439848 448704 452960 457728 464284 472320 488720 498560 503808 509580 543552 549810 560880 572160 580355 583680 586464 598272 610304 629760 679440 686592 696426 700416 724736 733080 747840 755712 762880 781952 797696 815328 839680 858240 875520 879696 897408 905920 915456 928568 944640 977440 997120 1019160 1044639 1087104 1099620 1121760 1144320 1160710 1167360 1172928 1196544 1259520 1358880 1373184 1392852 1449472 1466160 1495680 1511424 1525760 1563904 1595392 1630656 1716480 1741065 1751040 1759392 1794816 1811840 1830912 1857136 1889280 1954880 1994240 2038320 2089278 2174208 2199240 2243520 2288640 2321420 2345856 2393088 2519040 2717760 2746368 2785704 2898944 2932320 2991360 3051520 3127808 3190784 3261312 3432960 3482130 3502080 3518784 3589632 3623680 3714272 3778560 3909760 3988480 4076640 4178556 4348416 4398480 4487040 4577280 4642840 4691712 4786176 5223195 5435520 5492736 5571408 5797888 5864640 5982720 6255616 6522624 6865920 6964260 7037568 7179264 7247360 7428544 7557120 7819520 7976960 8153280 8357112 8696832 8796960 8974080 9154560 9285680 9383424 9572352 10446390 10871040 11142816 11595776 11729280 11965440 12511232 13045248 13731840 13928520 14075136 14358528 14494720 14857088 15639040 15953920 16306560 16714224 17393664 17593920 17948160 18571360 18766848 20892780 21742080 22285632 23458560 23930880 25022464 26090496 27463680 27857040 28150272 28717056 28989440 29714176 31278080 32613120 33428448 34787328 35187840 35896320 37142720 37533696 41785560 43484160 44571264 46917120 47861760 52180992 55714080 56300544 57978880 59428352 62556160 65226240 66856896 70375680 71792640 74285440 75067392 83571120 86968320 89142528 93834240 104361984 111428160 112601088 118856704 125112320 130452480 133713792 140751360 143585280 148570880 167142240 173936640 178285056 187668480 222856320 225202176 237713408 260904960 267427584 281502720 297141760 334284480 356570112 375336960 445712640 475426816 521809920 534855168 563005440 594283520 668568960 713140224 891425280 1069710336 1126010880 1188567040 1337137920 1426280448 1782850560 2139420672 2377134080 2674275840 3565701120 4278841344 5348551680 7131402240 10697103360 21394206720
• Sum of all divisors σ(n): 80501148000
• Sum of proper divisors (its aliquot sum) s(n): 59106941280
• 21394206720 is an abundant number, because the sum of its proper divisors (59106941280) is greater than itself. Its abundance is 37712734560

Bases of 21394206720

• Binary: 10011111011001100011011000000000000₂
• Hexadecimal: 0x4FB31B000
• Base-36: 9TTK3K0

Squares and roots of 21394206720

• 21394206720 squared (21394206720²) is 457712081178093158400
• 21394206720 cubed (21394206720³) is 9792386882965546166227304448000
• The square root of 21394206720 is 146267.5860195963
• The cube root of 21394206720 is 2776.0805453519

Scales and comparisons

• 21,394,206,720 seconds is equal to 680 years, 14 weeks, 3 hours, 12 minutes.
• To count from 1 to 21,394,206,720 would take you about one thousand, three hundred sixty 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 21394206720 cubic inches would be around 231.3 feet tall.

Recreational maths with 21394206720

• 21394206720 backwards is 02760249312
• 21394206720 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21394206720's digits is 36
• More coming soon!