640424070

Names of 640424070

• Cardinal: 640424070 can be written as Six hundred forty million, four hundred twenty-four thousand and seventy.

Scientific notation

• Scientific notation: 6.4042407 × 10⁸

Factors of 640424070

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 150

Divisors of 640424070

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 5 6 9 10 11 13 15 18 19 22 26 27 30 33 38 39 45 54 55 57 65 66 78 81 90 95 97 99 110 114 117 130 135 143 162 165 171 190 194 195 198 209 234 243 247 270 285 286 291 297 330 342 351 390 405 418 429 485 486 494 495 513 570 582 585 594 627 702 715 741 810 855 858 873 891 970 990 1026 1045 1053 1067 1170 1215 1235 1254 1261 1287 1430 1455 1482 1485 1539 1710 1746 1755 1782 1843 1881 2090 2106 2134 2145 2223 2430 2470 2522 2565 2574 2619 2673 2717 2910 2970 3078 3135 3159 3201 3510 3686 3705 3762 3783 3861 4290 4365 4446 4455 4617 5130 5238 5265 5335 5346 5434 5529 5643 6270 6305 6318 6402 6435 6669 7410 7566 7695 7722 7857 8151 8730 8910 9215 9234 9405 9603 10530 10670 11058 11115 11286 11349 11583 12610 12870 13095 13338 13365 13585 13871 15390 15714 15795 16005 16302 16587 16929 18430 18810 18915 19206 19305 20007 20273 22230 22698 23085 23166 23571 23959 24453 26190 26730 27170 27645 27742 28215 28809 31590 32010 33174 33345 33858 34047 34749 37830 38610 39285 40014 40546 40755 41613 46170 47142 47918 48015 48906 49761 50787 55290 56430 56745 57618 57915 60021 60819 66690 68094 69355 69498 71877 73359 78570 81510 82935 83226 84645 86427 96030 99522 100035 101365 101574 102141 113490 115830 117855 119795 120042 121638 122265 124839 138710 143754 144045 146718 149283 165870 169290 170235 172854 173745 182457 200070 202730 204282 208065 215631 220077 235710 239590 244530 248805 249678 253935 259281 263549 288090 298566 300105 304095 306423 340470 347490 359385 364914 366795 374517 416130 431262 432135 440154 447849 497610 507870 510705 518562 527098 547371 600210 608190 612846 624195 646893 660231 718770 733590 746415 749034 790647 864270 895698 912285 1021410 1078155 1094742 1100385 1123551 1248390 1293786 1296405 1317745 1320462 1492830 1532115 1581294 1642113 1824570 1872585 1940679 2156310 2200770 2239245 2247102 2371941 2592810 2635490 2736855 3064230 3234465 3284226 3301155 3370653 3745170 3881358 3953235 4478490 4743882 4926339 5473710 5617755 5822037 6468930 6602310 6741306 7115823 7906470 8210565 9703395 9852678 11235510 11644074 11859705 14231646 16421130 16853265 19406790 21347469 23719410 24631695 29110185 33706530 35579115 42694938 49263390 58220370 64042407 71158230 106737345 128084814 213474690 320212035 640424070
• Sum of all divisors σ(n): 2157442560
• Sum of proper divisors (its aliquot sum) s(n): 1517018490
• 640424070 is an abundant number, because the sum of its proper divisors (1517018490) is greater than itself. Its abundance is 876594420

Bases of 640424070

• Binary: 100110001011000001100010000110₂
• Hexadecimal: 0x262C1886
• Base-36: ALAIDI

Squares and roots of 640424070

• 640424070 squared (640424070²) is 410142989435364900
• 640424070 cubed (640424070³) is 262665442576163391193143000
• The square root of 640424070 is 25306.6013127011
• The cube root of 640424070 is 861.9641738043

Scales and comparisons

• 640,424,070 seconds is equal to 20 years, 18 weeks, 6 days, 7 hours, 34 minutes, 30 seconds.
• To count from 1 to 640,424,070 would take you about thirty 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 640424070 cubic inches would be around 71.8 feet tall.

Recreational maths with 640424070

• 640424070 backwards is 070424046
• 640424070 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 640424070's digits is 27
• More coming soon!