56402890 has 16 divisors (see below), whose sum is σ = 102151008. Its totient is φ = 22422096.

The previous prime is 56402869. The next prime is 56402891. The reversal of 56402890 is 9820465.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (56402891) 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, 15672 + ... + 18931.

It is an arithmetic number, because the mean of its divisors is an integer number (6384438).

Almost surely, 2^56402890 is an apocalyptic number.

56402890 is a deficient number, since it is larger than the sum of its proper divisors (45748118).

56402890 is a wasteful number, since it uses less digits than its factorization.

56402890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34773.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 56402890 is about 7510.1857500331. The cubic root of 56402890 is about 383.5015460026.

The spelling of 56402890 in words is "fifty-six million, four hundred two thousand, eight hundred ninety".