56839902 has 64 divisors (see below), whose sum is σ = 134784000. Its totient is φ = 15970080.

The previous prime is 56839901. The next prime is 56839921. The reversal of 56839902 is 20993865.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56839901) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145924 + ... + 146312.

It is an arithmetic number, because the mean of its divisors is an integer number (2106000).

Almost surely, 2^56839902 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56839902, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67392000).

56839902 is an abundant number, since it is smaller than the sum of its proper divisors (77944098).

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

56839902 is a wasteful number, since it uses less digits than its factorization.

56839902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486 (or 472 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 56839902 is about 7539.2242306487. The cubic root of 56839902 is about 384.4894610272.

It can be divided in two parts, 568 and 39902, that added together give a triangular number (40470 = T₂₈₄).

The spelling of 56839902 in words is "fifty-six million, eight hundred thirty-nine thousand, nine hundred two".