161243136

Names of 161243136

• Cardinal: 161243136 can be written as One hundred sixty-one million, two hundred forty-three thousand, one hundred thirty-six.

Scientific notation

• Scientific notation: 1.61243136 × 10⁸

Factors of 161243136

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 22
• Sum of prime factors: 5

Divisors of 161243136

• Number of divisors d(n): 140
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 54 64 72 81 96 108 128 144 162 192 216 243 256 288 324 384 432 486 512 576 648 729 768 864 972 1024 1152 1296 1458 1536 1728 1944 2048 2187 2304 2592 2916 3072 3456 3888 4096 4374 4608 5184 5832 6144 6561 6912 7776 8192 8748 9216 10368 11664 12288 13122 13824 15552 17496 18432 19683 20736 23328 24576 26244 27648 31104 34992 36864 39366 41472 46656 52488 55296 62208 69984 73728 78732 82944 93312 104976 110592 124416 139968 157464 165888 186624 209952 221184 248832 279936 314928 331776 373248 419904 497664 559872 629856 663552 746496 839808 995328 1119744 1259712 1492992 1679616 1990656 2239488 2519424 2985984 3359232 4478976 5038848 5971968 6718464 8957952 10077696 13436928 17915904 20155392 26873856 40310784 53747712 80621568 161243136
• Sum of all divisors σ(n): 483691692
• Sum of proper divisors (its aliquot sum) s(n): 322448556
• 161243136 is an abundant number, because the sum of its proper divisors (322448556) is greater than itself. Its abundance is 161205420

Bases of 161243136

• Binary: 1001100111000110000000000000₂
• Hexadecimal: 0x99C6000
• Base-36: 2O0000

Squares and roots of 161243136

• 161243136 squared (161243136²) is 25999348907114496
• 161243136 cubed (161243136³) is 4192216551741314046099456
• The square root of 161243136 is 12698.1548265879
• The cube root of 161243136 is 544.2858935545

Scales and comparisons

• 161,243,136 seconds is equal to 5 years, 6 weeks, 4 days, 5 hours, 45 minutes, 36 seconds.
• To count from 1 to 161,243,136 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 161243136 cubic inches would be around 45.4 feet tall.

Recreational maths with 161243136

• 161243136 backwards is 631342161
• 161243136 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 161243136's digits is 27
• More coming soon!