28728166720

Names of 28728166720

• Cardinal: 28728166720 can be written as Twenty-eight billion, seven hundred twenty-eight million, one hundred sixty-six thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.872816672 × 10¹⁰

Factors of 28728166720

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 276

Divisors of 28728166720

• Number of divisors d(n): 448
• Complete list of divisors:
  1 2 4 5 8 10 11 16 17 20 22 32 34 40 44 55 59 64 68 79 80 85 88 103 110 118 136 158 160 170 176 187 206 220 236 272 295 316 320 340 352 374 395 412 440 472 515 544 590 632 649 680 704 748 790 824 869 880 935 944 1003 1030 1088 1133 1180 1264 1298 1343 1360 1496 1580 1648 1738 1751 1760 1870 1888 2006 2060 2266 2360 2528 2596 2686 2720 2992 3160 3245 3296 3476 3502 3520 3740 3776 4012 4120 4345 4532 4661 4720 5015 5056 5192 5372 5440 5665 5984 6077 6320 6490 6592 6715 6952 7004 7480 8024 8137 8240 8690 8755 9064 9322 9440 10030 10384 10744 11033 11330 11968 12154 12640 12980 13430 13904 14008 14773 14960 16048 16274 16480 17380 17510 18128 18644 18880 19261 20060 20768 21488 22066 22660 23305 24308 25280 25960 26860 27808 28016 29546 29920 30385 32096 32548 32960 34760 35020 36256 37288 38522 40120 40685 41536 42976 44132 45320 46610 48616 51271 51920 53720 55165 55616 56032 59092 59840 60770 64192 65096 66847 69520 70040 72512 73865 74576 77044 79237 80240 81370 85952 88264 89507 90640 93220 96305 97232 102542 103309 103840 107440 110330 112064 118184 121540 130192 133694 138329 139040 140080 147730 149152 154088 158474 160480 162740 176528 179014 181280 186440 192610 194464 205084 206618 207680 214880 220660 236368 243080 256355 260384 267388 276658 278080 280160 295460 298304 308176 316948 320960 325480 334235 353056 358028 362560 372880 385220 388928 396185 410168 413236 429760 441320 447535 472736 480083 486160 512710 516545 520768 534776 553316 560320 590920 616352 633896 650960 668470 691645 706112 716056 745760 770440 792370 820336 826472 871607 882640 895070 945472 960166 972320 1025420 1033090 1069552 1106632 1136399 1181840 1232704 1267792 1301920 1336940 1383290 1432112 1491520 1521619 1540880 1584740 1640672 1652944 1743214 1765280 1790140 1920332 1944640 2050840 2066180 2139104 2213264 2272798 2363680 2400415 2535584 2603840 2673880 2766580 2864224 3043238 3081760 3169480 3281344 3305888 3486428 3530560 3580280 3840664 4101680 4132360 4278208 4358035 4426528 4545596 4727360 4800830 5071168 5280913 5347760 5533160 5681995 5728448 6086476 6163520 6338960 6611776 6972856 7160560 7608095 7681328 8161411 8203360 8264720 8716070 8853056 9091192 9601660 10561826 10695520 11066320 11363990 12172952 12677920 13945712 14321120 15216190 15362656 16322822 16406720 16529440 17432140 18182384 19203320 21123652 21391040 22132640 22727980 24345904 25355840 26404565 27891424 28642240 30432380 30725312 32645644 33058880 34864280 36364768 38406640 40807055 42247304 44265280 45455960 48691808 52809130 55782848 60864760 65291288 69728560 72729536 76813280 81614110 84494608 89775521 90911920 97383616 105618260 121729520 130582576 139457120 153626560 163228220 168989216 179551042 181823840 211236520 243459040 261165152 278914240 326456440 337978432 359102084 363647680 422473040 448877605 486918080 522330304 652912880 718204168 844946080 897755210 1305825760 1436408336 1689892160 1795510420 2611651520 2872816672 3591020840 5745633344 7182041680 14364083360 28728166720
• Sum of all divisors σ(n): 82164326400
• Sum of proper divisors (its aliquot sum) s(n): 53436159680
• 28728166720 is an abundant number, because the sum of its proper divisors (53436159680) is greater than itself. Its abundance is 24707992960

Bases of 28728166720

• Binary: 11010110000010101010000100101000000₂
• Hexadecimal: 0x6B0550940
• Base-36: D740BB4

Squares and roots of 28728166720

• 28728166720 squared (28728166720²) is 825307563092115558400
• 28728166720 cubed (28728166720³) is 23709573267787214479221096448000
• The square root of 28728166720 is 169493.8545198615
• The cube root of 28728166720 is 3062.6871578417

Scales and comparisons

• 28,728,166,720 seconds is equal to 913 years, 24 weeks, 1 day, 22 hours, 18 minutes, 40 seconds.
• To count from 1 to 28,728,166,720 would take you about one thousand, eight hundred twenty-six 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 28728166720 cubic inches would be around 255.2 feet tall.

Recreational maths with 28728166720

• 28728166720 backwards is 02766182782
• The number of decimal digits it has is: 11
• The sum of 28728166720's digits is 49
• More coming soon!