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28537045012 = 2272473412123
BaseRepresentation
bin11010100100111100…
…001100000000010100
32201122210111002102001
4122210330030000110
5431420440420022
621035411525044
72030113610650
oct324474140024
981583432361
1028537045012
1111114466323
125644bb9784
1328ca273668
14154a029a60
15b2049ab27
hex6a4f0c014

28537045012 has 24 divisors (see below), whose sum is σ = 57097307456. Its totient is φ = 12225187008.

The previous prime is 28537044997. The next prime is 28537045013. The reversal of 28537045012 is 21054073582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28537045013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136818 + ... + 275305.

Almost surely, 228537045012 is an apocalyptic number.

It is an amenable number.

28537045012 is an abundant number, since it is smaller than the sum of its proper divisors (28560262444).

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

28537045012 is a wasteful number, since it uses less digits than its factorization.

28537045012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414607 (or 414605 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 28537045012 in words is "twenty-eight billion, five hundred thirty-seven million, forty-five thousand, twelve".

Divisors: 1 2 4 7 14 28 2473 4946 9892 17311 34622 69244 412123 824246 1648492 2884861 5769722 11539444 1019180179 2038360358 4076720716 7134261253 14268522506 28537045012