21435505408

Names of 21435505408

• Cardinal: 21435505408 can be written as Twenty-one billion, four hundred thirty-five million, five hundred five thousand, four hundred eight.

Scientific notation

• Scientific notation: 2.1435505408 × 10¹⁰

Factors of 21435505408

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 1736

Divisors of 21435505408

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 8 16 23 32 37 46 61 64 74 92 122 128 148 184 244 256 296 368 488 592 736 851 976 1184 1403 1472 1613 1702 1952 2257 2368 2806 2944 3226 3404 3904 4514 4736 5612 5888 6452 6808 7808 9028 9472 11224 12904 13616 15616 18056 22448 25808 27232 36112 37099 44896 51616 51911 54464 59681 72224 74198 89792 98393 103232 103822 108928 119362 144448 148396 179584 196786 206464 207644 217856 238724 288896 296792 359168 393572 412928 415288 477448 577792 593584 787144 830576 954896 1187168 1372663 1574288 1661152 1909792 2263039 2374336 2745326 3148576 3322304 3640541 3819584 4526078 4748672 5490652 6297152 6644608 7281082 7639168 9052156 9497344 10981304 12594304 13289216 14562164 15278336 18104312 21962608 25188608 29124328 36208624 43925216 58248656 72417248 83732443 87850432 116497312 144834496 167464886 175700864 232994624 289668992 334929772 351401728 465989248 579337984 669859544 931978496 1339719088 2679438176 5358876352 10717752704 21435505408
• Sum of all divisors σ(n): 46634890176
• Sum of proper divisors (its aliquot sum) s(n): 25199384768
• 21435505408 is an abundant number, because the sum of its proper divisors (25199384768) is greater than itself. Its abundance is 3763879360

Bases of 21435505408

• Binary: 10011111101101001111101101100000000₂
• Hexadecimal: 0x4FDA7DB00
• Base-36: 9UI59TS

Squares and roots of 21435505408

• 21435505408 squared (21435505408²) is 459480892096397246464
• 21435505408 cubed (21435505408³) is 9849205147404987633895380877312
• The square root of 21435505408 is 146408.6930752405
• The cube root of 21435505408 is 2777.8656826957

Scales and comparisons

• 21,435,505,408 seconds is equal to 681 years, 30 weeks, 2 days, 3 hours, 3 minutes, 28 seconds.
• To count from 1 to 21,435,505,408 would take you about one thousand, three hundred sixty-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 21435505408 cubic inches would be around 231.5 feet tall.

Recreational maths with 21435505408

• 21435505408 backwards is 80450553412
• 21435505408 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21435505408's digits is 37
• More coming soon!