21129891200

Names of 21129891200

• Cardinal: 21129891200 can be written as Twenty-one billion, one hundred twenty-nine million, eight hundred ninety-one thousand, two hundred.

Scientific notation

• Scientific notation: 2.11298912 × 10¹⁰

Factors of 21129891200

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 59

Divisors of 21129891200

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 4 5 8 10 11 16 20 22 25 32 40 41 44 50 55 64 80 82 88 100 110 121 128 160 164 176 200 205 220 242 275 320 328 352 400 410 440 451 484 550 605 640 656 704 800 820 880 902 968 1025 1100 1210 1312 1331 1408 1600 1640 1760 1804 1936 2050 2200 2255 2420 2624 2662 3025 3200 3280 3520 3608 3872 4100 4400 4510 4840 4961 5248 5324 6050 6560 6655 7040 7216 7744 8200 8800 9020 9680 9922 10648 11275 12100 13120 13310 14432 14641 15488 16400 17600 18040 19360 19844 21296 22550 24200 24805 26240 26620 28864 29282 32800 33275 35200 36080 38720 39688 42592 45100 48400 49610 53240 54571 57728 58564 65600 66550 72160 73205 77440 79376 85184 90200 96800 99220 106480 109142 117128 124025 131200 133100 144320 146410 158752 161051 170368 180400 193600 198440 212960 218284 234256 248050 266200 272855 288640 292820 317504 322102 360800 366025 387200 396880 425920 436568 468512 496100 532400 545710 585640 600281 635008 644204 721600 732050 793760 805255 851840 873136 937024 992200 1064800 1091420 1171280 1200562 1288408 1364275 1443200 1464100 1587520 1610510 1746272 1874048 1984400 2129600 2182840 2342560 2401124 2576816 2728550 2928200 3001405 3175040 3221020 3492544 3968800 4026275 4259200 4365680 4685120 4802248 5153632 5457100 5856400 6002810 6442040 6603091 6985088 7937600 8052550 8731360 9370240 9604496 10307264 10914200 11712800 12005620 12884080 13206182 15007025 15875200 16105100 17462720 19208992 20614528 21828400 23425600 24011240 25768160 26412364 30014050 32210200 33015455 34925440 38417984 43656800 46851200 48022480 51536320 52824728 60028100 64420400 66030910 76835968 87313600 96044960 103072640 105649456 120056200 128840800 132061820 165077275 174627200 192089920 211298912 240112400 257681600 264123640 330154550 384179840 422597824 480224800 515363200 528247280 660309100 845195648 960449600 1056494560 1320618200 1920899200 2112989120 2641236400 4225978240 5282472800 10564945600 21129891200
• Sum of all divisors σ(n): 58817563560
• Sum of proper divisors (its aliquot sum) s(n): 37687672360
• 21129891200 is an abundant number, because the sum of its proper divisors (37687672360) is greater than itself. Its abundance is 16557781160

Bases of 21129891200

• Binary: 10011101011011100001000110110000000₂
• Hexadecimal: 0x4EB708D80
• Base-36: 9PG6WE8

Squares and roots of 21129891200

• 21129891200 squared (21129891200²) is 446472302123837440000
• 21129891200 cubed (21129891200³) is 9433911167690214033686528000000
• The square root of 21129891200 is 145361.2438031541
• The cube root of 21129891200 is 2764.6007421969

Scales and comparisons

• 21,129,891,200 seconds is equal to 671 years, 44 weeks, 6 days, 22 hours, 13 minutes, 20 seconds.
• To count from 1 to 21,129,891,200 would take you about one thousand, three hundred forty-three 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 21129891200 cubic inches would be around 230.4 feet tall.

Recreational maths with 21129891200

• 21129891200 backwards is 00219892112
• The number of decimal digits it has is: 11
• The sum of 21129891200's digits is 35
• More coming soon!