18281240640

Names of 18281240640

• Cardinal: 18281240640 can be written as Eighteen billion, two hundred eighty-one million, two hundred forty thousand, six hundred forty.

Scientific notation

• Scientific notation: 1.828124064 × 10¹⁰

Factors of 18281240640

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 902

Divisors of 18281240640

• Number of divisors d(n): 672
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 13 15 16 18 19 20 24 26 30 31 32 36 38 39 40 45 48 52 57 60 62 64 65 72 76 78 80 90 93 95 96 104 114 117 120 124 130 144 152 155 156 160 171 180 186 190 192 195 208 228 234 240 247 248 260 279 285 288 304 310 312 320 342 360 372 380 390 403 416 456 465 468 480 494 496 520 558 570 576 585 589 608 620 624 684 720 741 744 760 780 806 829 832 855 912 930 936 960 988 992 1040 1116 1140 1170 1178 1209 1216 1235 1240 1248 1368 1395 1440 1482 1488 1520 1560 1612 1658 1710 1767 1824 1860 1872 1976 1984 2015 2080 2223 2232 2280 2340 2356 2418 2470 2480 2487 2496 2736 2790 2880 2945 2964 2976 3040 3120 3224 3316 3420 3534 3627 3648 3705 3720 3744 3952 4030 4145 4160 4446 4464 4560 4680 4712 4836 4940 4960 4974 5301 5472 5580 5890 5928 5952 6045 6080 6240 6448 6632 6840 7068 7254 7410 7440 7461 7488 7657 7904 8060 8290 8835 8892 8928 9120 9360 9424 9672 9880 9920 9948 10602 10777 10944 11115 11160 11780 11856 12090 12435 12480 12896 13264 13680 14136 14508 14820 14880 14922 15314 15751 15808 16120 16580 17670 17784 17856 18135 18240 18720 18848 19344 19760 19896 21204 21554 22230 22320 22971 23560 23712 24180 24870 25699 25792 26505 26528 27360 28272 29016 29640 29760 29844 30628 31502 32240 32331 33160 35340 35568 36270 37305 37440 37696 38285 38688 39520 39792 42408 43108 44460 44640 45942 47120 47253 47424 48360 49740 51398 53010 53056 53885 54720 56544 58032 59280 59688 61256 63004 64480 64662 66320 68913 70680 71136 72540 74610 76570 77097 77376 78755 79040 79584 84816 86216 88920 89280 91884 94240 94506 96720 96993 99480 102796 106020 107770 113088 114855 116064 118560 119376 122512 126008 128495 128960 129324 132640 137826 141360 141759 142272 145080 149220 153140 154194 157510 159168 161655 169632 172432 177840 183768 188480 189012 193440 193986 198960 204763 205592 212040 215540 229710 231291 232128 236265 237120 238752 245024 252016 256990 258648 265280 275652 282720 283518 290160 298440 306280 308388 315020 323310 334087 339264 344565 344864 355680 367536 378024 385485 386880 387972 397920 409526 411184 424080 431080 459420 462582 472530 477504 484965 488281 490048 504032 513980 517296 551304 565440 567036 580320 596880 612560 614289 616776 630040 646620 668174 689130 689728 708795 711360 735072 756048 770970 775944 795840 819052 822368 848160 862160 918840 925164 945060 969930 976562 1002261 1008064 1023815 1027960 1034592 1102608 1134072 1156455 1160640 1193760 1225120 1228578 1233552 1260080 1293240 1336348 1378260 1417590 1464843 1470144 1512096 1541940 1551888 1638104 1644736 1670435 1696320 1724320 1837680 1842867 1850328 1890120 1939860 1953124 2004522 2047630 2055920 2069184 2205216 2268144 2312910 2387520 2441405 2450240 2457156 2467104 2520160 2586480 2672696 2756520 2835180 2929686 3006783 3024192 3071445 3083880 3103776 3276208 3340870 3448640 3675360 3685734 3700656 3780240 3879720 3906248 4009044 4095260 4111840 4394529 4410432 4536288 4625820 4882810 4914312 4934208 5011305 5040320 5172960 5345392 5513040 5670360 5859372 6013566 6142890 6167760 6207552 6347653 6552416 6681740 7324215 7350720 7371468 7401312 7560480 7759440 7812496 8018088 8190520 8223680 8789058 9072576 9214335 9251640 9765620 9828624 10022610 10345920 10690784 11026080 11340720 11718744 12027132 12285780 12335520 12695306 13104832 13363480 14648430 14742936 14802624 15033915 15120960 15518880 15624992 16036176 16381040 17578116 18428670 18503280 19042959 19531240 19657248 20045220 21381568 21972645 22052160 22681440 23437488 24054264 24571560 24671040 25390612 26726960 29296860 29485872 30067830 31037760 31249984 31738265 32072352 32762080 35156232 36857340 37006560 38085918 39062480 39314496 40090440 43945290 45362880 46874976 48108528 49143120 50781224 53453920 57128877 58593720 58971744 60135660 63476530 64144704 65524160 70312464 73714680 74013120 76171836 78124960 80180880 87890580 93749952 95214795 96217056 98286240 101562448 106907840 114257754 117187440 117943488 120271320 126953060 140624928 147429360 152343672 156249920 160361760 175781160 190429590 192434112 196572480 203124896 228515508 234374880 240542640 253906120 281249856 285644385 294858720 304687344 320723520 351562320 380859180 406249792 457031016 468749760 481085280 507812240 571288770 589717440 609374688 703124640 761718360 914062032 962170560 1015624480 1142577540 1218749376 1406249280 1523436720 1828124064 2031248960 2285155080 3046873440 3656248128 4570310160 6093746880 9140620320 18281240640
• Sum of all divisors σ(n): 73668940800
• Sum of proper divisors (its aliquot sum) s(n): 55387700160
• 18281240640 is an abundant number, because the sum of its proper divisors (55387700160) is greater than itself. Its abundance is 37106459520

Bases of 18281240640

• Binary: 10001000001101001011001100001000000₂
• Hexadecimal: 0x441A59840
• Base-36: 8EC6FK0

Squares and roots of 18281240640

• 18281240640 squared (18281240640²) is 334203759337587609600
• 18281240640 cubed (18281240640³) is 6109659347243086088179974144000
• The square root of 18281240640 is 135208.1382166029
• The cube root of 18281240640 is 2634.3201579833

Scales and comparisons

• 18,281,240,640 seconds is equal to 581 years, 14 weeks, 6 days, 10 hours, 24 minutes.
• To count from 1 to 18,281,240,640 would take you about one thousand, one hundred sixty-two 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 18281240640 cubic inches would be around 219.5 feet tall.

Recreational maths with 18281240640

• 18281240640 backwards is 04604218281
• 18281240640 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18281240640's digits is 36
• More coming soon!