1997507820

Names of 1997507820

• Cardinal: 1997507820 can be written as One billion, nine hundred ninety-seven million, five hundred seven thousand, eight hundred twenty.

Scientific notation

• Scientific notation: 1.99750782 × 10⁹

Factors of 1997507820

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 951

Divisors of 1997507820

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 7 10 11 12 14 15 17 20 21 22 28 29 30 33 34 35 42 44 51 55 58 60 66 68 70 77 84 85 87 102 105 110 116 119 132 140 145 154 165 170 174 187 203 204 210 220 231 238 255 290 308 319 330 340 348 357 374 385 406 420 435 462 476 493 510 561 580 595 609 638 660 714 748 770 812 870 877 924 935 957 986 1015 1020 1122 1155 1190 1218 1276 1309 1428 1479 1540 1595 1740 1754 1785 1870 1914 1972 2030 2233 2244 2310 2380 2436 2465 2618 2631 2805 2958 3045 3190 3451 3508 3570 3740 3828 3927 4060 4385 4466 4620 4785 4930 5236 5262 5423 5610 5916 6090 6139 6380 6545 6699 6902 7140 7395 7854 8770 8932 9570 9647 9860 10353 10524 10846 11165 11220 12180 12278 13090 13155 13398 13804 14790 14909 15708 16269 17255 17540 18417 19140 19294 19635 20706 21692 22330 24556 25433 26180 26310 26796 27115 28941 29580 29818 30695 32538 33495 34510 36834 37961 38588 39270 41412 44660 44727 48235 50866 51765 52620 54230 57882 59636 61390 65076 66990 67529 69020 73668 74545 75922 76299 78540 81345 89454 92085 96470 101732 103530 104363 108460 113883 115764 122780 127165 133980 135058 144705 149090 151844 152598 162690 163999 178031 178908 184170 189805 192940 202587 207060 208726 223635 227766 254330 270116 279763 289410 298180 305196 313089 325380 327998 337645 356062 368340 379610 381495 405174 417452 432361 447270 455532 491997 508660 521815 534093 559526 569415 578820 626178 655996 675290 712124 759220 762990 810348 819995 839289 864722 890155 894540 983994 1012935 1043630 1068186 1119052 1138830 1147993 1252356 1297083 1350580 1398815 1525980 1565445 1639990 1678578 1729444 1780310 1958341 1967988 2025870 2087260 2136372 2161805 2277660 2295986 2459985 2594166 2670465 2797630 3026527 3130890 3279980 3357156 3443979 3560620 3916682 4051740 4196445 4323610 4591972 4755971 4919970 5188332 5340930 5595260 5739965 5875023 6053054 6261780 6485415 6887958 7833364 8392890 8647220 9079581 9511942 9791705 9839940 10681860 11479930 11750046 12106108 12970830 13775916 14267913 15132635 16785780 17219895 18159162 19023884 19583410 22959860 23500092 23779855 25941660 28535826 29375115 30265270 33291797 34439790 36318324 39166820 45397905 47559710 57071652 58750230 60530540 66583594 68879580 71339565 90795810 95119420 99875391 117500460 133167188 142679130 166458985 181591620 199750782 285358260 332917970 399501564 499376955 665835940 998753910 1997507820
• Sum of all divisors σ(n): 7646607360
• Sum of proper divisors (its aliquot sum) s(n): 5649099540
• 1997507820 is an abundant number, because the sum of its proper divisors (5649099540) is greater than itself. Its abundance is 3651591720

Bases of 1997507820

• Binary: 1110111000011111000110011101100₂
• Hexadecimal: 0x770F8CEC
• Base-36: X19IWC

Squares and roots of 1997507820

• 1997507820 squared (1997507820²) is 3990037490961152400
• 1997507820 cubed (1997507820³) is 7970131090288081235211768000
• The square root of 1997507820 is 44693.4874450405
• The cube root of 1997507820 is 1259.3975073673

Scales and comparisons

• 1,997,507,820 seconds is equal to 63 years, 26 weeks, 5 days, 7 hours, 17 minutes.
• To count from 1 to 1,997,507,820 would take you about one hundred twenty-seven 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 1997507820 cubic inches would be around 104.9 feet tall.

Recreational maths with 1997507820

• 1997507820 backwards is 0287057991
• The number of decimal digits it has is: 10
• The sum of 1997507820's digits is 48
• More coming soon!