56031668 has 48 divisors (see below), whose sum is σ = 123446400. Its totient is φ = 21617280.

The previous prime is 56031667. The next prime is 56031737. The reversal of 56031668 is 86613065.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56031667) 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, 32738 + ... + 34406.

It is an arithmetic number, because the mean of its divisors is an integer number (2571800).

Almost surely, 2^56031668 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 56031668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61723200).

56031668 is an abundant number, since it is smaller than the sum of its proper divisors (67414732).

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

56031668 is a wasteful number, since it uses less digits than its factorization.

56031668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800 (or 1798 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 56031668 is about 7485.4303817483. The cubic root of 56031668 is about 382.6583404702.

The spelling of 56031668 in words is "fifty-six million, thirty-one thousand, six hundred sixty-eight".