20450640

Names of 20450640

• Cardinal: 20450640 can be written as Twenty million, four hundred fifty thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.045064 × 10⁷

Factors of 20450640

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 101

Divisors of 20450640

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 35 37 40 42 47 48 49 56 60 70 74 80 84 94 98 105 111 112 120 140 141 147 148 168 185 188 196 210 222 235 240 245 259 280 282 294 296 329 336 370 376 392 420 444 470 490 518 555 560 564 588 592 658 705 735 740 752 777 784 840 888 940 980 987 1036 1110 1128 1176 1295 1316 1410 1470 1480 1554 1645 1680 1739 1776 1813 1880 1960 1974 2072 2220 2256 2303 2352 2590 2632 2820 2940 2960 3108 3290 3478 3626 3760 3885 3920 3948 4144 4440 4606 4935 5180 5217 5264 5439 5640 5880 6216 6580 6909 6956 7252 7770 7896 8695 8880 9065 9212 9870 10360 10434 10878 11280 11515 11760 12173 12432 13160 13818 13912 14504 15540 15792 17390 18130 18424 19740 20720 20868 21756 23030 24346 26085 26320 27195 27636 27824 29008 31080 34545 34780 36260 36519 36848 39480 41736 43512 46060 48692 52170 54390 55272 60865 62160 69090 69560 72520 73038 78960 83472 85211 87024 92120 97384 104340 108780 110544 121730 138180 139120 145040 146076 170422 182595 184240 194768 208680 217560 243460 255633 276360 292152 340844 365190 417360 426055 435120 486920 511266 552720 584304 681688 730380 852110 973840 1022532 1278165 1363376 1460760 1704220 2045064 2556330 2921520 3408440 4090128 5112660 6816880 10225320 20450640
• Sum of all divisors σ(n): 77352192
• Sum of proper divisors (its aliquot sum) s(n): 56901552
• 20450640 is an abundant number, because the sum of its proper divisors (56901552) is greater than itself. Its abundance is 36450912

Bases of 20450640

• Binary: 1001110000000110101010000₂
• Hexadecimal: 0x1380D50
• Base-36: C6BTC

Squares and roots of 20450640

• 20450640 squared (20450640²) is 418228676409600
• 20450640 cubed (20450640³) is 8553044098929222144000
• The square root of 20450640 is 4522.2383838095
• The cube root of 20450640 is 273.4653470307

Scales and comparisons

• 20,450,640 seconds is equal to 33 weeks, 5 days, 16 hours, 44 minutes.
• To count from 1 to 20,450,640 would take you about fifty weeks!

  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 20450640 cubic inches would be around 22.8 feet tall.

Recreational maths with 20450640

• 20450640 backwards is 04605402
• 20450640 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 20450640's digits is 21
• More coming soon!