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20087647160 = 2357125956983
BaseRepresentation
bin10010101101010100…
…010010101110111000
31220211221110012112212
4102231110102232320
5312114414202120
613121135554252
71310535116660
oct225524225670
956757405485
1020087647160
118578a53699
123a8738b988
131b818b4969
14d87bbd1a0
157c87d06c5
hex4ad512bb8

20087647160 has 64 divisors (see below), whose sum is σ = 51695884800. Its totient is φ = 6881602176.

The previous prime is 20087647093. The next prime is 20087647163. The reversal of 20087647160 is 6174678002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20087647163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324029 + ... + 381011.

It is an arithmetic number, because the mean of its divisors is an integer number (807748200).

Almost surely, 220087647160 is an apocalyptic number.

20087647160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20087647160 is an abundant number, since it is smaller than the sum of its proper divisors (31608237640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20087647160 is a wasteful number, since it uses less digits than its factorization.

20087647160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58260 (or 58256 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The spelling of 20087647160 in words is "twenty billion, eighty-seven million, six hundred forty-seven thousand, one hundred sixty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 56 70 140 280 1259 2518 5036 6295 8813 10072 12590 17626 25180 35252 44065 50360 56983 70504 88130 113966 176260 227932 284915 352520 398881 455864 569830 797762 1139660 1595524 1994405 2279320 3191048 3988810 7977620 15955240 71741597 143483194 286966388 358707985 502191179 573932776 717415970 1004382358 1434831940 2008764716 2510955895 2869663880 4017529432 5021911790 10043823580 20087647160