28387240640

Names of 28387240640

• Cardinal: 28387240640 can be written as Twenty-eight billion, three hundred eighty-seven million, two hundred forty thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.838724064 × 10¹⁰

Factors of 28387240640

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 254

Divisors of 28387240640

• Number of divisors d(n): 448
• Complete list of divisors:
  1 2 4 5 8 10 11 16 20 22 31 32 37 40 44 55 62 64 74 79 80 88 89 110 124 148 155 158 160 176 178 185 220 248 296 310 316 320 341 352 356 370 395 407 440 445 496 592 620 632 682 704 712 740 790 814 869 880 890 979 992 1147 1184 1240 1264 1364 1424 1480 1580 1628 1705 1738 1760 1780 1958 1984 2035 2294 2368 2449 2480 2528 2728 2759 2848 2923 2960 3160 3256 3293 3410 3476 3520 3560 3916 4070 4345 4588 4895 4898 4960 5056 5456 5518 5696 5735 5846 5920 6320 6512 6586 6820 6952 7031 7120 7832 8140 8690 9176 9790 9796 9920 10912 11036 11470 11692 11840 12245 12617 12640 13024 13172 13640 13795 13904 14062 14240 14615 15664 16280 16465 17380 18352 19580 19592 21824 22072 22940 23384 24490 25234 25280 26048 26344 26939 27280 27590 27808 28124 28480 29230 30349 31328 32153 32560 32930 34760 35155 36223 36704 39160 39184 44144 45880 46768 48980 50468 52688 53878 54560 55180 55616 56248 58460 60698 62656 63085 64306 65120 65860 69520 70310 72446 73408 77341 78320 78368 88288 90613 91760 93536 97960 100936 102083 105376 107756 109120 110360 112496 116920 121396 126170 128612 130240 131720 134695 139040 140620 144892 151745 154682 156640 156736 160765 176576 181115 181226 183520 187072 195920 201872 204166 210752 215512 217961 220720 224992 233840 242792 252340 257224 260147 263440 269390 278080 281240 289784 303490 309364 313280 321530 362230 362452 367040 386705 391840 403744 408332 431024 435922 441440 449984 453065 467680 485584 504680 510415 514448 520294 526880 538780 562480 579568 606980 618728 643060 724460 724904 773410 783680 807488 816664 862048 871844 882880 906130 935360 971168 996743 1009360 1020830 1028896 1040588 1053760 1077560 1089805 1122913 1124960 1159136 1213960 1237456 1286120 1300735 1448920 1449808 1546820 1633328 1724096 1743688 1812260 1942336 1993486 2018720 2041660 2057792 2081176 2155120 2179610 2245826 2249920 2318272 2397571 2427920 2474912 2572240 2601470 2861617 2897840 2899616 3093640 3266656 3487376 3624520 3986972 4037440 4083320 4162352 4310240 4359220 4491652 4795142 4855840 4949824 4983715 5144480 5202940 5614565 5723234 5795680 5799232 6187280 6533312 6974752 7249040 7973944 8064557 8166640 8324704 8620480 8718440 8983304 9590284 9711680 9967430 10288960 10405880 11229130 11446468 11591360 11987855 12374560 13949504 14308085 14498080 15947888 16129114 16333280 16649408 17436880 17966608 19180568 19934860 20811760 22458260 22892936 23975710 24749120 28616170 28996160 31895776 32258228 32666560 34873760 35933216 38361136 39869720 40322785 41623520 44916520 45785872 47951420 57232340 63791552 64516456 69747520 71866432 76722272 79739440 80645570 83247040 88710127 89833040 91571744 95902840 114464680 129032912 153444544 159478880 161291140 177420254 179666080 183143488 191805680 228929360 258065824 318957760 322582280 354840508 359332160 383611360 443550635 457858720 516131648 645164560 709681016 767222720 887101270 915717440 1290329120 1419362032 1774202540 2580658240 2838724064 3548405080 5677448128 7096810160 14193620320 28387240640
• Sum of all divisors σ(n): 80057548800
• Sum of proper divisors (its aliquot sum) s(n): 51670308160
• 28387240640 is an abundant number, because the sum of its proper divisors (51670308160) is greater than itself. Its abundance is 23283067520

Bases of 28387240640

• Binary: 11010011100000000101110101011000000₂
• Hexadecimal: 0x69C02EAC0
• Base-36: D1H1328

Squares and roots of 28387240640

• 28387240640 squared (28387240640²) is 805835431153267609600
• 28387240640 cubed (28387240640³) is 22875444300385960356032774144000
• The square root of 28387240640 is 168485.1347745551
• The cube root of 28387240640 is 3050.5236273785

Scales and comparisons

• 28,387,240,640 seconds is equal to 902 years, 32 weeks, 4 days, 37 minutes, 20 seconds.
• To count from 1 to 28,387,240,640 would take you about one thousand, eight hundred five 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 28387240640 cubic inches would be around 254.2 feet tall.

Recreational maths with 28387240640

• 28387240640 backwards is 04604278382
• 28387240640 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 28387240640's digits is 44
• More coming soon!