155730640

Names of 155730640

• Cardinal: 155730640 can be written as One hundred fifty-five million, seven hundred thirty thousand, six hundred forty.

Scientific notation

• Scientific notation: 1.5573064 × 10⁸

Factors of 155730640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1250

Divisors of 155730640

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 26 40 52 65 80 104 130 137 208 260 274 520 548 685 1040 1093 1096 1370 1781 2186 2192 2740 3562 4372 5465 5480 7124 8744 8905 10930 10960 14209 14248 17488 17810 21860 28418 28496 35620 43720 56836 71045 71240 87440 113672 142090 142480 149741 227344 284180 299482 568360 598964 748705 1136720 1197928 1497410 1946633 2395856 2994820 3893266 5989640 7786532 9733165 11979280 15573064 19466330 31146128 38932660 77865320 155730640
• Sum of all divisors σ(n): 393131088
• Sum of proper divisors (its aliquot sum) s(n): 237400448
• 155730640 is an abundant number, because the sum of its proper divisors (237400448) is greater than itself. Its abundance is 81669808

Bases of 155730640

• Binary: 1001010010000100001011010000₂
• Hexadecimal: 0x94842D0
• Base-36: 2KPUJ4

Squares and roots of 155730640

• 155730640 squared (155730640²) is 24252032234809600
• 155730640 cubed (155730640³) is 3776784501227529286144000
• The square root of 155730640 is 12479.2083082221
• The cube root of 155730640 is 538.0112489183

Scales and comparisons

• 155,730,640 seconds is equal to 4 years, 49 weeks, 3 days, 10 hours, 30 minutes, 40 seconds.
• To count from 1 to 155,730,640 would take you about 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 155730640 cubic inches would be around 44.8 feet tall.

Recreational maths with 155730640

• 155730640 backwards is 046037551
• The number of decimal digits it has is: 9
• The sum of 155730640's digits is 31
• More coming soon!