56397930 has 16 divisors (see below), whose sum is σ = 135355104. Its totient is φ = 15039440.

The previous prime is 56397917. The next prime is 56397937. The reversal of 56397930 is 3979365.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56397937) 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, 939936 + ... + 939995.

It is an arithmetic number, because the mean of its divisors is an integer number (8459694).

Almost surely, 2^56397930 is an apocalyptic number.

56397930 is an abundant number, since it is smaller than the sum of its proper divisors (78957174).

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

56397930 is a wasteful number, since it uses less digits than its factorization.

56397930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1879941.

The product of its (nonzero) digits is 153090, while the sum is 42.

The square root of 56397930 is about 7509.8555245757. The cubic root of 56397930 is about 383.4903041234.

The spelling of 56397930 in words is "fifty-six million, three hundred ninety-seven thousand, nine hundred thirty".