18268937440

Names of 18268937440

• Cardinal: 18268937440 can be written as Eighteen billion, two hundred sixty-eight million, nine hundred thirty-seven thousand, four hundred forty.

Scientific notation

• Scientific notation: 1.826893744 × 10¹⁰

Factors of 18268937440

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 262

Divisors of 18268937440

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 26 29 32 40 41 52 58 65 80 82 83 89 104 116 130 145 160 164 166 178 205 208 232 260 290 328 332 356 377 410 415 416 445 464 520 533 580 656 664 712 754 820 830 890 928 1040 1066 1079 1157 1160 1189 1312 1328 1424 1508 1640 1660 1780 1885 2080 2132 2158 2314 2320 2378 2407 2581 2656 2665 2848 3016 3280 3320 3403 3560 3649 3770 4264 4316 4628 4640 4756 4814 5162 5330 5395 5785 5945 6032 6560 6640 6806 7120 7298 7387 7540 8528 8632 9256 9512 9628 10324 10660 10790 11570 11890 12035 12064 12905 13280 13612 14240 14596 14774 15080 15457 17015 17056 17264 18245 18512 19024 19256 20648 21320 21580 23140 23780 24070 25810 27224 29192 29548 30160 30914 31291 33553 34030 34528 36490 36935 37024 38048 38512 41296 42640 43160 44239 46280 47437 47560 48140 51620 54448 58384 59096 60320 61828 62582 67106 68060 72980 73870 77024 77285 82592 85280 86320 88478 92560 94874 95120 96031 96280 98687 103240 105821 108896 116768 118192 123656 125164 134212 136120 145960 147740 154570 156455 167765 172640 176956 185120 189748 190240 192062 192560 197374 206480 211642 214223 221195 236384 237185 247312 250328 268424 272240 291920 295480 302867 309140 312910 335530 353912 379496 384124 385120 394748 412960 423284 428446 442390 474370 480155 493435 494624 500656 529105 536848 544480 583840 590960 605734 618280 625820 671060 707824 758992 768248 789496 846568 856892 884780 948740 960310 986870 1001312 1058210 1071115 1073696 1181920 1211468 1236560 1251640 1282931 1342120 1375673 1415648 1514335 1517984 1536496 1578992 1693136 1713784 1769560 1897480 1920620 1973740 2116420 2142230 2422936 2473120 2503280 2565862 2684240 2751346 2784899 3028670 3072992 3157984 3386272 3427568 3539120 3794960 3841240 3937271 3947480 4232840 4284460 4845872 5006560 5131724 5368480 5502692 5569798 6057340 6414655 6855136 6878365 7078240 7589920 7682480 7874542 7894960 8465680 8568920 8783143 9691744 10263448 11005384 11139596 12114680 12829310 13756730 13924495 15364960 15749084 15789920 16931360 17137840 17566286 19686355 20526896 22010768 22279192 24229360 25658620 27513460 27848990 31498168 34275680 35132572 39372710 41053792 43915715 44021536 44558384 48458720 51317240 55026920 55697980 62996336 70265144 78745420 87831430 89116768 102634480 110053840 111395960 114180859 125992672 140530288 157490840 175662860 205268960 220107680 222791920 228361718 281060576 314981680 351325720 445583840 456723436 570904295 629963360 702651440 913446872 1141808590 1405302880 1826893744 2283617180 3653787488 4567234360 9134468720 18268937440
• Sum of all divisors σ(n): 50409475200
• Sum of proper divisors (its aliquot sum) s(n): 32140537760
• 18268937440 is an abundant number, because the sum of its proper divisors (32140537760) is greater than itself. Its abundance is 13871600320

Bases of 18268937440

• Binary: 10001000000111010011101110011100000₂
• Hexadecimal: 0x440E9DCE0
• Base-36: 8E4UQCG

Squares and roots of 18268937440

• 18268937440 squared (18268937440²) is 333754075186633753600
• 18268937440 cubed (18268937440³) is 6097332319929668368710774784000
• The square root of 18268937440 is 135162.6332978165
• The cube root of 18268937440 is 2633.7290631399

Scales and comparisons

• 18,268,937,440 seconds is equal to 580 years, 46 weeks, 4 days, 50 minutes, 40 seconds.
• To count from 1 to 18,268,937,440 would take you about one thousand, one hundred sixty-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 18268937440 cubic inches would be around 219.5 feet tall.

Recreational maths with 18268937440

• 18268937440 backwards is 04473986281
• 18268937440 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18268937440's digits is 52
• More coming soon!