21228480

Names of 21228480

• Cardinal: 21228480 can be written as Twenty-one million, two hundred twenty-eight thousand, four hundred eighty.

Scientific notation

• Scientific notation: 2.122848 × 10⁷

Factors of 21228480

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 30

Divisors of 21228480

• Number of divisors d(n): 392
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 13 14 15 16 18 20 21 24 26 27 28 30 32 35 36 39 40 42 45 48 52 54 56 60 63 64 65 70 72 78 80 81 84 90 91 96 104 105 108 112 117 120 126 130 135 140 144 156 160 162 168 180 182 189 192 195 208 210 216 224 234 240 243 252 260 270 273 280 288 312 315 320 324 336 351 360 364 378 390 405 416 420 432 448 455 468 480 486 504 520 540 546 560 567 576 585 624 630 648 672 702 720 728 729 756 780 810 819 832 840 864 910 936 945 960 972 1008 1040 1053 1080 1092 1120 1134 1170 1215 1248 1260 1296 1344 1365 1404 1440 1456 1458 1512 1560 1620 1638 1680 1701 1728 1755 1820 1872 1890 1944 2016 2080 2106 2160 2184 2240 2268 2340 2430 2457 2496 2520 2592 2730 2808 2835 2880 2912 2916 3024 3120 3159 3240 3276 3360 3402 3510 3640 3645 3744 3780 3888 4032 4095 4160 4212 4320 4368 4536 4680 4860 4914 5040 5103 5184 5265 5460 5616 5670 5824 5832 6048 6240 6318 6480 6552 6720 6804 7020 7280 7290 7371 7488 7560 7776 8190 8424 8505 8640 8736 9072 9360 9477 9720 9828 10080 10206 10530 10920 11232 11340 11664 12096 12285 12480 12636 12960 13104 13608 14040 14560 14580 14742 15120 15552 15795 16380 16848 17010 17472 18144 18720 18954 19440 19656 20160 20412 21060 21840 22113 22464 22680 23328 24570 25272 25515 25920 26208 27216 28080 29120 29160 29484 30240 31590 32760 33696 34020 36288 36855 37440 37908 38880 39312 40824 42120 43680 44226 45360 46656 47385 49140 50544 51030 52416 54432 56160 58320 58968 60480 63180 65520 66339 67392 68040 73710 75816 77760 78624 81648 84240 87360 88452 90720 94770 98280 101088 102060 108864 110565 112320 116640 117936 126360 131040 132678 136080 147420 151632 157248 163296 168480 176904 181440 189540 196560 202176 204120 221130 233280 235872 252720 262080 265356 272160 294840 303264 326592 331695 336960 353808 379080 393120 408240 442260 471744 505440 530712 544320 589680 606528 663390 707616 758160 786240 816480 884520 1010880 1061424 1179360 1326780 1415232 1516320 1632960 1769040 2122848 2358720 2653560 3032640 3538080 4245696 5307120 7076160 10614240 21228480
• Sum of all divisors σ(n): 93280992
• Sum of proper divisors (its aliquot sum) s(n): 72052512
• 21228480 is an abundant number, because the sum of its proper divisors (72052512) is greater than itself. Its abundance is 50824032

Bases of 21228480

• Binary: 1010000111110101111000000₂
• Hexadecimal: 0x143EBC0
• Base-36: CN000

Squares and roots of 21228480

• 21228480 squared (21228480²) is 450648363110400
• 21228480 cubed (21228480³) is 9566579763321864192000
• The square root of 21228480 is 4607.4374656637
• The cube root of 21228480 is 276.8893805153

Scales and comparisons

• 21,228,480 seconds is equal to 35 weeks, 16 hours, 48 minutes.
• To count from 1 to 21,228,480 would take you about four days!

  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 21228480 cubic inches would be around 23.1 feet tall.

Recreational maths with 21228480

• 21228480 backwards is 08482212
• 21228480 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21228480's digits is 27
• More coming soon!