21497129472

Names of 21497129472

• Cardinal: 21497129472 can be written as Twenty-one billion, four hundred ninety-seven million, one hundred twenty-nine thousand, four hundred seventy-two.

Scientific notation

• Scientific notation: 2.1497129472 × 10¹⁰

Factors of 21497129472

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 325

Divisors of 21497129472

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 6 7 8 12 13 14 16 21 24 26 28 32 39 42 48 49 52 56 64 78 84 91 96 98 104 112 127 128 147 156 168 173 182 192 196 208 224 254 256 273 294 312 336 346 364 381 384 392 416 448 508 512 519 546 588 624 637 672 692 728 762 768 784 832 889 896 1016 1038 1092 1176 1211 1248 1274 1344 1384 1456 1524 1536 1568 1651 1664 1778 1792 1911 2032 2076 2184 2249 2352 2422 2496 2548 2667 2688 2768 2912 3048 3136 3302 3328 3556 3584 3633 3822 4064 4152 4368 4498 4704 4844 4953 4992 5096 5334 5376 5536 5824 6096 6223 6272 6604 6656 6747 7112 7266 7644 8128 8304 8477 8736 8996 9408 9688 9906 9984 10192 10668 10752 11072 11557 11648 12192 12446 12544 13208 13494 14224 14532 15288 15743 16256 16608 16954 17472 17992 18669 18816 19376 19812 19968 20384 21336 21971 22144 23114 23296 24384 24892 25088 25431 26416 26988 28448 29064 30576 31486 32512 33216 33908 34671 34944 35984 37338 37632 38752 39624 40768 42672 43942 44288 46228 46592 47229 48768 49784 50862 52832 53976 56896 58128 61152 62972 65024 65913 66432 67816 69342 69888 71968 74676 75264 77504 79248 80899 81536 85344 87884 88576 92456 94458 97536 99568 101724 105664 107952 110201 113792 116256 122304 125944 131826 132864 135632 138684 139776 143936 149352 153797 155008 158496 161798 163072 170688 175768 184912 188916 195072 199136 203448 211328 215904 220402 227584 232512 242697 244608 251888 263652 265728 271264 277368 285623 287872 298704 307594 310016 316992 323596 326144 330603 341376 351536 369824 377832 398272 406896 422656 431808 440804 455168 461391 465024 485394 489216 503776 527304 542528 554736 571246 575744 597408 615188 620032 633984 647192 661206 682752 703072 739648 755664 796544 813792 845312 856869 863616 881608 922782 930048 970788 978432 1007552 1054608 1076579 1085056 1109472 1142492 1151488 1194816 1230376 1267968 1294384 1322412 1365504 1406144 1479296 1511328 1593088 1627584 1713738 1727232 1763216 1845564 1860096 1941576 1999361 2015104 2109216 2153158 2170112 2218944 2284984 2389632 2460752 2535936 2588768 2644824 2812288 2958592 3022656 3186176 3229737 3255168 3427476 3454464 3526432 3691128 3883152 3998722 4030208 4218432 4306316 4340224 4437888 4569968 4779264 4921504 5177536 5289648 5624576 5917184 5998083 6045312 6459474 6510336 6854952 7052864 7382256 7766304 7997444 8060416 8436864 8612632 8875776 9139936 9558528 9843008 10355072 10579296 11249152 11996166 12090624 12918948 13020672 13709904 13995527 14105728 14764512 15532608 15994888 16873728 17225264 17751552 18279872 19686016 20710144 21158592 23992332 24181248 25837896 27419808 27991054 28211456 29529024 31065216 31989776 33747456 34450528 36559744 39372032 41420288 41986581 42317184 47984664 51675792 54839616 55982108 56422912 59058048 62130432 63979552 68901056 73119488 78744064 83973162 84634368 95969328 103351584 109679232 111964216 118116096 124260864 127959104 137802112 146238976 167946324 169268736 191938656 206703168 219358464 223928432 236232192 255918208 275604224 335892648 383877312 413406336 438716928 447856864 511836416 551208448 671785296 767754624 826812672 895713728 1023672832 1343570592 1535509248 1653625344 1791427456 2687141184 3071018496 3582854912 5374282368 7165709824 10748564736 21497129472
• Sum of all divisors σ(n): 72727345152
• Sum of proper divisors (its aliquot sum) s(n): 51230215680
• 21497129472 is an abundant number, because the sum of its proper divisors (51230215680) is greater than itself. Its abundance is 29733086208

Bases of 21497129472

• Binary: 10100000001010101000010101000000000₂
• Hexadecimal: 0x501542A00
• Base-36: 9VIU39C

Squares and roots of 21497129472

• 21497129472 squared (21497129472²) is 462126575535930998784
• 21497129472 cubed (21497129472³) is 9934394826747896468917922562048
• The square root of 21497129472 is 146618.9942401733
• The cube root of 21497129472 is 2780.5251268925

Scales and comparisons

• 21,497,129,472 seconds is equal to 683 years, 28 weeks, 1 day, 8 hours, 51 minutes, 12 seconds.
• To count from 1 to 21,497,129,472 would take you about one thousand, three hundred sixty-seven 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 21497129472 cubic inches would be around 231.7 feet tall.

Recreational maths with 21497129472

• 21497129472 backwards is 27492179412
• 21497129472 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21497129472's digits is 48
• More coming soon!