56393240 has 32 divisors (see below), whose sum is σ = 132403680. Its totient is φ = 21576192.

The previous prime is 56393231. The next prime is 56393251. The reversal of 56393240 is 4239365.

It is a junction number, because it is equal to n+sod(n) for n = 56393197 and 56393206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29729 + ... + 31568.

It is an arithmetic number, because the mean of its divisors is an integer number (4137615).

Almost surely, 2^56393240 is an apocalyptic number.

It is an amenable number.

56393240 is an abundant number, since it is smaller than the sum of its proper divisors (76010440).

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

56393240 is a wasteful number, since it uses less digits than its factorization.

56393240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61331 (or 61327 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 56393240 is about 7509.5432617437. The cubic root of 56393240 is about 383.4796735950.

The spelling of 56393240 in words is "fifty-six million, three hundred ninety-three thousand, two hundred forty".