56170840 has 64 divisors (see below), whose sum is σ = 145152000. Its totient is φ = 19347840.

The previous prime is 56170819. The next prime is 56170841. The reversal of 56170840 is 4807165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56170841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5001 + ... + 11719.

It is an arithmetic number, because the mean of its divisors is an integer number (2268000).

Almost surely, 2^56170840 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 56170840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72576000).

56170840 is an abundant number, since it is smaller than the sum of its proper divisors (88981160).

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

56170840 is a wasteful number, since it uses less digits than its factorization.

56170840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6760 (or 6756 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 56170840 is about 7494.7208086759. The cubic root of 56170840 is about 382.9748953588.

The spelling of 56170840 in words is "fifty-six million, one hundred seventy thousand, eight hundred forty".