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20200688000 = 27531262543
BaseRepresentation
bin10010110100000011…
…100000100110000000
31221010211011021102122
4102310003200212000
5312332334004000
613140254503412
71313410005053
oct226403404600
957124137378
1020200688000
118626841979
123ab9204b68
131b9c14312c
14d98c06a9a
157d36ae085
hex4b40e0980

20200688000 has 64 divisors (see below), whose sum is σ = 50224000320. Its totient is φ = 8080268800.

The previous prime is 20200687981. The next prime is 20200688003. The reversal of 20200688000 is 88600202.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200688003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 615272 + ... + 647271.

It is an arithmetic number, because the mean of its divisors is an integer number (784750005).

Almost surely, 220200688000 is an apocalyptic number.

20200688000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20200688000 is an abundant number, since it is smaller than the sum of its proper divisors (30023312320).

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

20200688000 is an equidigital number, since it uses as much as digits as its factorization.

20200688000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262572 (or 1262550 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The spelling of 20200688000 in words is "twenty billion, two hundred million, six hundred eighty-eight thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 125 128 160 200 250 320 400 500 640 800 1000 1600 2000 3200 4000 8000 16000 1262543 2525086 5050172 6312715 10100344 12625430 20200688 25250860 31563575 40401376 50501720 63127150 80802752 101003440 126254300 157817875 161605504 202006880 252508600 315635750 404013760 505017200 631271500 808027520 1010034400 1262543000 2020068800 2525086000 4040137600 5050172000 10100344000 20200688000