56403478 has 16 divisors (see below), whose sum is σ = 86880960. Its totient is φ = 27449856.

The previous prime is 56403449. The next prime is 56403497. The reversal of 56403478 is 87430465.

56403478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16588 + ... + 19696.

It is an arithmetic number, because the mean of its divisors is an integer number (5430060).

Almost surely, 2^56403478 is an apocalyptic number.

56403478 is a deficient number, since it is larger than the sum of its proper divisors (30477482).

56403478 is a wasteful number, since it uses less digits than its factorization.

56403478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3351.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 56403478 is about 7510.2248967657. The cubic root of 56403478 is about 383.5028786656.

The spelling of 56403478 in words is "fifty-six million, four hundred three thousand, four hundred seventy-eight".