745138400

Names of 745138400

• Cardinal: 745138400 can be written as Seven hundred forty-five million, one hundred thirty-eight thousand, four hundred.

Scientific notation

• Scientific notation: 7.451384 × 10⁸

Factors of 745138400

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 21711

Divisors of 745138400

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 5 8 10 16 20 25 32 40 43 50 80 86 100 160 172 200 215 344 400 430 688 800 860 1075 1376 1720 2150 3440 4300 6880 8600 17200 21661 34400 43322 86644 108305 173288 216610 346576 433220 541525 693152 866440 931423 1083050 1732880 1862846 2166100 3465760 3725692 4332200 4657115 7451384 8664400 9314230 14902768 17328800 18628460 23285575 29805536 37256920 46571150 74513840 93142300 149027680 186284600 372569200 745138400
• Sum of all divisors σ(n): 1861458984
• Sum of proper divisors (its aliquot sum) s(n): 1116320584
• 745138400 is an abundant number, because the sum of its proper divisors (1116320584) is greater than itself. Its abundance is 371182184

Bases of 745138400

• Binary: 101100011010011110100011100000₂
• Hexadecimal: 0x2C69E8E0
• Base-36: CBMWGW

Squares and roots of 745138400

• 745138400 squared (745138400²) is 555231235154560000
• 745138400 cubed (745138400³) is 413724114193092591104000000
• The square root of 745138400 is 27297.2233020137
• The cube root of 745138400 is 906.5929029763

Scales and comparisons

• 745,138,400 seconds is equal to 23 years, 36 weeks, 6 hours, 53 minutes, 20 seconds.
• To count from 1 to 745,138,400 would take you about thirty-five 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 745138400 cubic inches would be around 75.5 feet tall.

Recreational maths with 745138400

• 745138400 backwards is 004831547
• 745138400 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 745138400's digits is 32
• More coming soon!