21450784768

Names of 21450784768

• Cardinal: 21450784768 can be written as Twenty-one billion, four hundred fifty million, seven hundred eighty-four thousand, seven hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1450784768 × 10¹⁰

Factors of 21450784768

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 20
• Sum of prime factors: 158

Divisors of 21450784768

• Number of divisors d(n): 272
• Complete list of divisors:
  1 2 4 7 8 14 16 19 23 28 32 38 46 56 64 76 92 107 112 128 133 152 161 184 214 224 256 266 304 322 368 428 437 448 512 532 608 644 736 749 856 874 896 1024 1064 1216 1288 1472 1498 1712 1748 1792 2033 2048 2128 2432 2461 2576 2944 2996 3059 3424 3496 3584 4066 4096 4256 4864 4922 5152 5888 5992 6118 6848 6992 7168 8132 8192 8512 9728 9844 10304 11776 11984 12236 13696 13984 14231 14336 16264 16384 17024 17227 19456 19688 20608 23552 23968 24472 27392 27968 28462 28672 32528 32768 34048 34454 38912 39376 41216 46759 47104 47936 48944 54784 55936 56924 57344 65056 65536 68096 68908 77824 78752 82432 93518 94208 95872 97888 109568 111872 113848 114688 130112 136192 137816 155648 157504 164864 187036 188416 191744 195776 219136 223744 227696 229376 260224 272384 275632 311296 315008 327313 329728 374072 376832 383488 391552 438272 447488 455392 458752 520448 544768 551264 622592 630016 654626 659456 748144 753664 766976 783104 876544 894976 910784 1040896 1089536 1102528 1245184 1260032 1309252 1318912 1496288 1507328 1533952 1566208 1753088 1789952 1821568 2081792 2179072 2205056 2520064 2618504 2637824 2992576 3067904 3132416 3506176 3579904 3643136 4163584 4358144 4410112 5040128 5237008 5275648 5985152 6135808 6264832 7012352 7159808 7286272 8327168 8716288 8820224 10080256 10474016 10551296 11970304 12271616 12529664 14319616 14572544 16654336 17640448 20160512 20948032 23940608 24543232 25059328 28639232 29145088 33308672 35280896 40321024 41896064 47881216 49086464 50118656 58290176 66617344 70561792 80642048 83792128 95762432 100237312 116580352 133234688 141123584 161284096 167584256 191524864 200474624 233160704 282247168 335168512 383049728 466321408 564494336 670337024 766099456 932642816 1128988672 1340674048 1532198912 2681348096 3064397824 5362696192 10725392384 21450784768
• Sum of all divisors σ(n): 54357765120
• Sum of proper divisors (its aliquot sum) s(n): 32906980352
• 21450784768 is an abundant number, because the sum of its proper divisors (32906980352) is greater than itself. Its abundance is 11456195584

Bases of 21450784768

• Binary: 10011111110100100010000000000000000₂
• Hexadecimal: 0x4FE910000
• Base-36: 9UR8RGG

Squares and roots of 21450784768

• 21450784768 squared (21450784768²) is 460136167163060813824
• 21450784768 cubed (21450784768³) is 9870281885787286677433543032832
• The square root of 21450784768 is 146460.8642880411
• The cube root of 21450784768 is 2778.5255525109

Scales and comparisons

• 21,450,784,768 seconds is equal to 682 years, 3 weeks, 3 days, 23 hours, 19 minutes, 28 seconds.
• To count from 1 to 21,450,784,768 would take you about one thousand, three hundred sixty-four 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 21450784768 cubic inches would be around 231.5 feet tall.

Recreational maths with 21450784768

• 21450784768 backwards is 86748705412
• The number of decimal digits it has is: 11
• The sum of 21450784768's digits is 52
• More coming soon!