56402278 has 8 divisors (see below), whose sum is σ = 84672072. Its totient is φ = 28178256.

The previous prime is 56402273. The next prime is 56402321. The reversal of 56402278 is 87220465.

56402278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56402273) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8175 + ... + 13402.

It is an arithmetic number, because the mean of its divisors is an integer number (10584009).

Almost surely, 2^56402278 is an apocalyptic number.

56402278 is a deficient number, since it is larger than the sum of its proper divisors (28269794).

56402278 is a wasteful number, since it uses less digits than its factorization.

56402278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22886.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 56402278 is about 7510.1450052579. The cubic root of 56402278 is about 383.5001589354.

The spelling of 56402278 in words is "fifty-six million, four hundred two thousand, two hundred seventy-eight".