21028451040

Names of 21028451040

• Cardinal: 21028451040 can be written as Twenty-one billion, twenty-eight million, four hundred fifty-one thousand and forty.

Scientific notation

• Scientific notation: 2.102845104 × 10¹⁰

Factors of 21028451040

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 211672

Divisors of 21028451040

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 23 24 27 30 32 36 40 45 46 48 54 60 69 72 80 90 92 96 108 115 120 135 138 144 160 180 184 207 216 230 240 270 276 288 345 360 368 414 432 460 480 540 552 621 690 720 736 828 864 920 1035 1080 1104 1242 1380 1440 1656 1840 2070 2160 2208 2484 2760 3105 3312 3680 4140 4320 4968 5520 6210 6624 8280 9936 11040 12420 16560 19872 24840 33120 49680 99360 211639 423278 634917 846556 1058195 1269834 1693112 1904751 2116390 2539668 3174585 3386224 3809502 4232780 4867697 5079336 5714253 6349170 6772448 7619004 8465560 9523755 9735394 10158672 11428506 12698340 14603091 15238008 16931120 19047510 19470788 20317344 22857012 24338485 25396680 28571265 29206182 30476016 33862240 38095020 38941576 43809273 45714024 48676970 50793360 57142530 58412364 60952032 73015455 76190040 77883152 87618546 91428048 97353940 101586720 114285060 116824728 131427819 146030910 152380080 155766304 175237092 182856096 194707880 219046365 228570120 233649456 262855638 292061820 304760160 350474184 389415760 438092730 457140240 467298912 525711276 584123640 657139095 700948368 778831520 876185460 914280480 1051422552 1168247280 1314278190 1401896736 1752370920 2102845104 2336494560 2628556380 3504741840 4205690208 5257112760 7009483680 10514225520 21028451040
• Sum of all divisors σ(n): 76799923200
• Sum of proper divisors (its aliquot sum) s(n): 55771472160
• 21028451040 is an abundant number, because the sum of its proper divisors (55771472160) is greater than itself. Its abundance is 34743021120

Bases of 21028451040

• Binary: 10011100101011001001011001011100000₂
• Hexadecimal: 0x4E564B2E0
• Base-36: 9NRSOO0

Squares and roots of 21028451040

• 21028451040 squared (21028451040²) is 442195753141677081600
• 21028451040 cubed (21028451040³) is 9298691745035682693915684864000
• The square root of 21028451040 is 145011.8996496491
• The cube root of 21028451040 is 2760.1695548009

Scales and comparisons

• 21,028,451,040 seconds is equal to 668 years, 33 weeks, 1 day, 20 hours, 24 minutes.
• To count from 1 to 21,028,451,040 would take you about one thousand, three hundred thirty-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 21028451040 cubic inches would be around 230 feet tall.

Recreational maths with 21028451040

• 21028451040 backwards is 04015482012
• 21028451040 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21028451040's digits is 27
• More coming soon!