128625864640

Names of 128625864640

• Cardinal: 128625864640 can be written as One hundred twenty-eight billion, six hundred twenty-five million, eight hundred sixty-four thousand, six hundred forty.

Scientific notation

• Scientific notation: 1.2862586464 × 10¹¹

Factors of 128625864640

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 3946

Divisors of 128625864640

• Number of divisors d(n): 448
• Complete list of divisors:
  1 2 4 5 7 8 10 13 14 16 20 26 28 31 32 35 37 40 52 56 62 64 65 70 74 80 91 104 112 124 130 140 148 155 160 182 185 208 217 224 248 259 260 280 296 310 320 364 370 403 416 434 448 455 481 496 518 520 560 592 620 728 740 806 832 868 910 962 992 1036 1040 1085 1120 1147 1184 1240 1295 1456 1480 1612 1736 1820 1924 1984 2015 2072 2080 2170 2240 2294 2368 2405 2480 2590 2821 2912 2960 3224 3367 3472 3640 3848 3851 4030 4144 4160 4340 4588 4810 4960 5180 5642 5735 5824 5920 6448 6734 6944 7280 7696 7702 8029 8060 8288 8680 9176 9620 9920 10360 11284 11470 11840 12896 13468 13888 14105 14560 14911 15392 15404 16058 16120 16576 16835 17360 18352 19240 19255 20720 22568 22940 25792 26936 26957 28210 29120 29822 30784 30808 32116 32240 33670 34720 36704 38480 38510 40145 41440 45136 45880 50063 53872 53914 56420 59644 61616 64232 64480 67340 69440 73408 74555 76960 77020 80290 82880 90272 91760 100126 104377 107744 107828 112840 119288 119381 123232 128464 128960 134680 134785 142487 149110 153920 154040 160580 180544 183520 200252 208754 215488 215656 225680 238576 238762 246464 250315 256928 269360 269570 284974 298220 308080 321160 350441 367040 400504 417508 431312 451360 477152 477524 500630 513856 521885 538720 539140 569948 596440 596905 616160 642320 700882 712435 801008 835016 835667 862624 902720 954304 955048 997409 1001260 1043770 1077440 1078280 1139896 1192880 1193810 1232320 1284640 1401764 1424870 1551953 1602016 1670032 1671334 1725248 1752205 1852331 1910096 1994818 2002520 2087540 2156560 2279792 2385760 2387620 2569280 2803528 2849740 3103906 3204032 3340064 3342668 3504410 3704662 3820192 3989636 4005040 4175080 4178335 4313120 4417097 4559584 4771520 4775240 4987045 5607056 5699480 6207812 6680128 6685336 7008820 7409324 7640384 7759765 7979272 8010080 8350160 8356670 8626240 8834194 9119168 9261655 9550480 9974090 10863671 11214112 11398960 12415624 12966317 13370672 14017640 14818648 15519530 15958544 16020160 16700320 16713340 17668388 18523310 19100960 19948180 21727342 22085485 22428224 22797920 24831248 25932634 26741344 28035280 29637296 30919679 31039060 31917088 33400640 33426680 35336776 37046620 38201920 39896360 43454684 44170970 45595840 49662496 51865268 53482688 54318355 56070560 57422261 59274592 61839358 62078120 63834176 64831585 66853360 70673552 74093240 79792720 86909368 88341940 99324992 103730536 108636710 112141120 114844522 118549184 123678716 124156240 129663170 133706720 141347104 148186480 154598395 159585440 173818736 176683880 207461072 217273420 229689044 247357432 248312480 259326340 267413440 282694208 287111305 296372960 309196790 319170880 347637472 353367760 401955827 414922144 434546840 459378088 494714864 496624960 518652680 574222610 592745920 618393580 695274944 706735520 803911654 829844288 869093680 918756176 989429728 1037305360 1148445220 1236787160 1413471040 1607823308 1738187360 1837512352 1978859456 2009779135 2074610720 2296890440 2473574320 3215646616 3476374720 3675024704 4019558270 4149221440 4593780880 4947148640 6431293232 8039116540 9187561760 9894297280 12862586464 16078233080 18375123520 25725172928 32156466160 64312932320 128625864640
• Sum of all divisors σ(n): 399754027008
• Sum of proper divisors (its aliquot sum) s(n): 271128162368
• 128625864640 is an abundant number, because the sum of its proper divisors (271128162368) is greater than itself. Its abundance is 142502297728

Bases of 128625864640

• Binary: 1110111110010101100101110111111000000₂
• Hexadecimal: 0x1DF2B2EFC0
• Base-36: 1N38IOCG

Squares and roots of 128625864640

• 128625864640 squared (128625864640²) is 16544613054387602329600
• 128625864640 cubed (128625864640³) is 2128065159254836695341278265344000
• The square root of 128625864640 is 358644.4822383303
• The cube root of 128625864640 is 5047.8848069501

Scales and comparisons

• 128,625,864,640 seconds is equal to 4,089 years, 47 weeks, 6 hours, 50 minutes, 40 seconds.
• To count from 1 to 128,625,864,640 would take you about eight thousand, one hundred seventy-nine 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 128625864640 cubic inches would be around 420.7 feet tall.

Recreational maths with 128625864640

• 128625864640 backwards is 046468526821
• 128625864640 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 128625864640's digits is 52
• More coming soon!