21457246440

Names of 21457246440

• Cardinal: 21457246440 can be written as Twenty-one billion, four hundred fifty-seven million, two hundred forty-six thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.145724644 × 10¹⁰

Factors of 21457246440

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1466

Divisors of 21457246440

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 19 20 21 24 28 30 31 35 38 40 42 56 57 60 62 70 76 84 93 95 105 114 120 124 133 140 152 155 168 186 190 210 217 228 248 266 280 285 310 372 380 399 420 434 456 465 532 570 589 620 651 665 744 760 798 840 868 930 961 1064 1085 1140 1178 1240 1302 1330 1399 1596 1736 1767 1860 1922 1995 2170 2280 2356 2604 2660 2798 2883 2945 3192 3255 3534 3720 3844 3990 4123 4197 4340 4712 4805 5208 5320 5596 5766 5890 6510 6727 6995 7068 7688 7980 8246 8394 8680 8835 9610 9793 11192 11532 11780 12369 13020 13454 13990 14136 14415 15960 16492 16788 17670 18259 19220 19586 20181 20615 20985 23064 23560 24738 26040 26581 26908 27980 28830 29379 32984 33576 33635 35340 36518 38440 39172 40362 41230 41970 43369 48965 49476 53162 53816 54777 55960 57660 58758 61845 67270 70680 73036 78344 79743 80724 82460 83940 86738 91295 97930 98952 100905 106324 109554 115320 117516 123690 127813 130107 132905 134540 146072 146895 159486 161448 164920 167880 173476 182590 186067 195860 201810 212648 216845 219108 235032 247380 255626 260214 265810 269080 273885 293790 303583 318972 346952 365180 372134 383439 391720 398715 403620 433690 438216 494760 511252 520428 531620 547770 558201 587580 607166 637944 639065 650535 730360 744268 766878 797430 807240 824011 867380 910749 930335 1022504 1040856 1063240 1095540 1116402 1175160 1214332 1278130 1301070 1344439 1488536 1517915 1533756 1594860 1648022 1734760 1821498 1860670 1917195 2191080 2232804 2428664 2472033 2556260 2602140 2688878 2791005 3035830 3067512 3189720 3296044 3642996 3721340 3834390 4033317 4120055 4465608 4553745 4944066 5112520 5204280 5377756 5582010 5768077 6071660 6592088 6722195 7285992 7442680 7668780 8066634 8240110 9107490 9411073 9888132 10755512 11164020 11536154 12143320 12360165 13444390 15337560 16133268 16480220 17304231 18214980 18822146 19776264 20166585 22328040 23072308 24720330 25544341 26888780 28233219 28840385 32266536 32960440 34608462 36429960 37644292 40333170 46144616 47055365 49440660 51088682 53777560 56466438 57680770 69216924 75288584 76633023 80666340 86521155 94110730 98881320 102177364 112932876 115361540 127721705 138433848 141166095 153266046 161332680 173042310 178810387 188221460 204354728 225865752 230723080 255443410 282332190 306532092 346084620 357620774 376442920 383165115 510886820 536431161 564664380 613064184 692169240 715241548 766330230 894051935 1021773640 1072862322 1129328760 1430483096 1532660460 1788103870 2145724644 2682155805 3065320920 3576207740 4291449288 5364311610 7152415480 10728623220 21457246440
• Sum of all divisors σ(n): 80075520000
• Sum of proper divisors (its aliquot sum) s(n): 58618273560
• 21457246440 is an abundant number, because the sum of its proper divisors (58618273560) is greater than itself. Its abundance is 37161027120

Bases of 21457246440

• Binary: 10011111110111100111001100011101000₂
• Hexadecimal: 0x4FEF398E8
• Base-36: 9UV39BC

Squares and roots of 21457246440

• 21457246440 squared (21457246440²) is 460413424786892673600
• 21457246440 cubed (21457246440³) is 9879204319936760579265681984000
• The square root of 21457246440 is 146482.9220079939
• The cube root of 21457246440 is 2778.8045185023

Scales and comparisons

• 21,457,246,440 seconds is equal to 682 years, 14 weeks, 1 day, 18 hours, 14 minutes.
• To count from 1 to 21,457,246,440 would take you about one thousand, three hundred sixty-four 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 21457246440 cubic inches would be around 231.6 feet tall.

Recreational maths with 21457246440

• 21457246440 backwards is 04464275412
• The number of decimal digits it has is: 11
• The sum of 21457246440's digits is 39
• More coming soon!