250138864 has 20 divisors (see below), whose sum is σ = 484999960. Its totient is φ = 124977600.

The previous prime is 250138859. The next prime is 250138879. The reversal of 250138864 is 468831052.

It is a happy number.

250138864 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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20314 + ... + 30214.

It is an arithmetic number, because the mean of its divisors is an integer number (24249998).

Almost surely, 2^250138864 is an apocalyptic number.

It is an amenable number.

250138864 is a deficient number, since it is larger than the sum of its proper divisors (234861096).

250138864 is a wasteful number, since it uses less digits than its factorization.

250138864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11488 (or 11482 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 250138864 is about 15815.7789564726. The cubic root of 250138864 is about 630.0771418094.

The spelling of 250138864 in words is "two hundred fifty million, one hundred thirty-eight thousand, eight hundred sixty-four".