18405232128

Names of 18405232128

• Cardinal: 18405232128 can be written as Eighteen billion, four hundred five million, two hundred thirty-two thousand, one hundred twenty-eight.

Scientific notation

• Scientific notation: 1.8405232128 × 10¹⁰

Factors of 18405232128

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 5484

Divisors of 18405232128

• Number of divisors d(n): 180
• 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 1152 1296 1458 1536 1728 1944 2187 2304 2592 2916 3456 3888 4374 4608 5184 5479 5832 6561 6912 7776 8748 10368 10958 11664 13122 13824 15552 16437 17496 20736 21916 23328 26244 31104 32874 34992 41472 43832 46656 49311 52488 62208 65748 69984 87664 93312 98622 104976 124416 131496 139968 147933 175328 186624 197244 209952 262992 279936 295866 350656 373248 394488 419904 443799 525984 559872 591732 701312 788976 839808 887598 1051968 1119744 1183464 1331397 1402624 1577952 1679616 1775196 2103936 2366928 2662794 2805248 3155904 3359232 3550392 3994191 4207872 4733856 5325588 6311808 7100784 7988382 8415744 9467712 10651176 11982573 12623616 14201568 15976764 18935424 21302352 23965146 25247232 28403136 31953528 35947719 37870848 42604704 47930292 56806272 63907056 71895438 75741696 85209408 95860584 113612544 127814112 143790876 170418816 191721168 227225088 255628224 287581752 340837632 383442336 511256448 575163504 681675264 766884672 1022512896 1150327008 1533769344 2045025792 2300654016 3067538688 4601308032 6135077376 9202616064 18405232128
• Sum of all divisors σ(n): 55169039640
• Sum of proper divisors (its aliquot sum) s(n): 36763807512
• 18405232128 is an abundant number, because the sum of its proper divisors (36763807512) is greater than itself. Its abundance is 18358575384

Bases of 18405232128

• Binary: 10001001001000010011000111000000000₂
• Hexadecimal: 0x449098E00
• Base-36: 8GE0000

Squares and roots of 18405232128

• 18405232128 squared (18405232128²) is 338752569685563408384
• 18405232128 cubed (18405232128³) is 6234819679019290501770381361152
• The square root of 18405232128 is 135665.8841713715
• The cube root of 18405232128 is 2640.2624532465

Scales and comparisons

• 18,405,232,128 seconds is equal to 585 years, 11 weeks, 6 days, 12 hours, 28 minutes, 48 seconds.
• To count from 1 to 18,405,232,128 would take you about one thousand, one hundred seventy 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 18405232128 cubic inches would be around 220 feet tall.

Recreational maths with 18405232128

• 18405232128 backwards is 82123250481
• 18405232128 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18405232128's digits is 36
• More coming soon!