56838140 has 48 divisors (see below), whose sum is σ = 127008000. Its totient is φ = 21292032.

The previous prime is 56838137. The next prime is 56838161. The reversal of 56838140 is 4183865.

It is a self number, because there is not a number n which added to its sum of digits gives 56838140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118421 + ... + 118899.

It is an arithmetic number, because the mean of its divisors is an integer number (2646000).

Almost surely, 2^56838140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56838140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63504000).

56838140 is an abundant number, since it is smaller than the sum of its proper divisors (70169860).

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

56838140 is a wasteful number, since it uses less digits than its factorization.

56838140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854 (or 852 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 56838140 is about 7539.1073742188. The cubic root of 56838140 is about 384.4854880117.

The spelling of 56838140 in words is "fifty-six million, eight hundred thirty-eight thousand, one hundred forty".