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56902830 = 2351896761
BaseRepresentation
bin1101100100010…
…0010010101110
310222001222000020
43121010102232
5104031342310
65351343010
71260444315
oct331042256
9128058006
1056902830
112a135a36
1217081a66
13ba3431a
1477b327c
154ee0170
hex36444ae

56902830 has 16 divisors (see below), whose sum is σ = 136566864. Its totient is φ = 15174080.

The previous prime is 56902829. The next prime is 56902837. The reversal of 56902830 is 3820965.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 56902791 and 56902800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56902837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 948351 + ... + 948410.

It is an arithmetic number, because the mean of its divisors is an integer number (8535429).

Almost surely, 256902830 is an apocalyptic number.

56902830 is an abundant number, since it is smaller than the sum of its proper divisors (79664034).

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

56902830 is a wasteful number, since it uses less digits than its factorization.

56902830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1896771.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 56902830 is about 7543.3964498759. The cubic root of 56902830 is about 384.6312993517.

The spelling of 56902830 in words is "fifty-six million, nine hundred two thousand, eight hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 1896761 3793522 5690283 9483805 11380566 18967610 28451415 56902830