155531001990

Names of 155531001990

• Cardinal: 155531001990 can be written as One hundred fifty-five billion, five hundred thirty-one million, one thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 1.5553100199 × 10¹¹

Factors of 155531001990

• Number of distinct prime factors ω(n): 9
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1056

Divisors of 155531001990

• Number of divisors d(n): 512
• Complete list of divisors:
  1 2 3 5 6 7 10 13 14 15 17 19 21 26 30 34 35 38 39 42 51 57 65 70 78 85 91 95 102 105 114 119 130 133 170 182 190 195 210 221 233 238 247 255 266 273 285 323 357 390 399 442 455 466 494 510 546 570 595 646 663 665 699 714 741 757 798 910 969 1105 1165 1190 1235 1326 1330 1365 1398 1482 1514 1547 1615 1631 1729 1785 1938 1995 2210 2261 2271 2330 2470 2730 3029 3094 3230 3262 3315 3458 3495 3570 3705 3785 3961 3990 4199 4427 4522 4542 4641 4845 4893 5187 5299 6058 6630 6783 6990 7410 7570 7735 7922 8155 8398 8645 8854 9087 9282 9690 9786 9841 10374 10598 11305 11355 11883 12597 12869 13281 13566 14383 15145 15470 15897 16310 17290 18174 19682 19805 20995 21203 22135 22610 22710 23205 23766 24465 25194 25738 25935 26495 26562 27727 28766 29393 29523 30290 30989 31794 33915 38607 39610 41990 42406 43149 44270 45435 46410 48930 49205 51493 51870 52990 55454 57551 58786 59046 59415 61978 62985 63609 64345 66405 67830 68887 71915 75259 77214 79485 83181 86298 88179 90083 90870 92967 98410 100681 102986 106015 115102 118830 125970 127218 128690 132810 137774 138635 143830 146965 147615 150518 154479 154945 158970 166362 167297 172653 176358 176381 180166 185934 186979 193035 201362 206661 212030 215745 225777 244511 257465 270249 277270 287755 293930 295230 302043 308958 309890 318045 334594 344435 345306 352762 360451 373958 376295 386070 402857 413322 415905 431490 440895 450415 451554 464835 489022 501891 503405 514930 526813 529143 540498 560937 575510 604086 636090 688870 720902 733533 752590 772395 805714 831810 836485 863265 881790 881905 900830 929670 934895 978367 1003782 1006810 1033305 1053626 1058286 1081353 1121874 1128885 1171079 1208571 1222555 1234667 1308853 1351245 1467066 1510215 1544790 1580439 1672970 1711577 1726530 1763810 1802255 1869790 1956734 2014285 2066610 2162706 2257770 2292953 2342158 2417142 2445110 2469334 2509455 2617706 2634065 2645715 2702490 2804685 2935101 2998477 3020430 3160878 3178643 3351239 3423154 3513237 3604510 3667665 3704001 3926559 4028570 4585906 4891835 5018910 5134731 5268130 5291430 5406765 5609370 5855395 5870202 5996954 6042855 6173335 6357286 6544265 6702478 6848569 6878859 7026474 7335330 7408002 7853118 7902195 8557885 8995431 9535929 9783670 10053717 10269462 10813530 11464765 11710790 12085710 12346670 13088530 13697138 13757718 14675505 14992385 15804390 15893215 16050671 16756195 17115770 17566185 17990862 18520005 19071858 19632795 20107434 20545707 20989339 22250501 22929530 23458673 25673655 29351010 29984770 31786430 32101342 33512390 34242845 34394295 35132370 37040010 38980201 39265590 41091414 41978678 43566107 44501002 44977155 46917346 47679645 48152013 50268585 51347310 56971063 62968017 66751503 68485690 68788590 70376019 77960402 80253355 87132214 89954310 95359290 96304026 100537170 102728535 104946695 111252505 113942126 116940603 117293365 125936034 130698321 133503006 140752038 160506710 170913189 194901005 205457070 209893390 217830535 222505010 233881206 234586730 240760065 261396642 272861407 284855315 304962749 314840085 333757515 341826378 351880095 389802010 398797441 435661070 481520130 545722814 569710630 584703015 609925498 629680170 653491605 667515030 703760190 740623819 797594882 818584221 854565945 914888247 1169406030 1196392323 1306983210 1364307035 1481247638 1524813745 1637168442 1709131890 1829776494 1993987205 2221871457 2392784646 2728614070 3049627490 3703119095 3987974410 4092921105 4443742914 4574441235 5184366733 5981961615 7406238190 8185842210 9148882470 10368733466 11109357285 11963923230 15553100199 22218714570 25921833665 31106200398 51843667330 77765500995 155531001990
• Sum of all divisors σ(n): 514918010880
• Sum of proper divisors (its aliquot sum) s(n): 359387008890
• 155531001990 is an abundant number, because the sum of its proper divisors (359387008890) is greater than itself. Its abundance is 203856006900

Bases of 155531001990

• Binary: 10010000110110010111101100000010000110₂
• Hexadecimal: 0x24365EC086
• Base-36: 1ZG7556U

Squares and roots of 155531001990

• 155531001990 squared (155531001990²) is 24189892580013383960100
• 155531001990 cubed (155531001990³) is 3762278230999947854924947180599000
• The square root of 155531001990 is 394374.1903192957
• The cube root of 155531001990 is 5377.8125045301

Scales and comparisons

• 155,531,001,990 seconds is equal to 4,945 years, 21 weeks, 8 hours, 6 minutes, 30 seconds.
• To count from 1 to 155,531,001,990 would take you about nine thousand, eight hundred ninety 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 155531001990 cubic inches would be around 448.2 feet tall.

Recreational maths with 155531001990

• 155531001990 backwards is 099100135551
• 155531001990 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 155531001990's digits is 39
• More coming soon!