238922138 has 64 divisors (see below), whose sum is σ = 457497600. Its totient is φ = 92969856.

The previous prime is 238922113. The next prime is 238922153. The reversal of 238922138 is 831229832.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 650831 + ... + 651197.

It is an arithmetic number, because the mean of its divisors is an integer number (7148400).

Almost surely, 2^238922138 is an apocalyptic number.

238922138 is a deficient number, since it is larger than the sum of its proper divisors (218575462).

238922138 is a wasteful number, since it uses less digits than its factorization.

238922138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476 (or 462 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 238922138 is about 15457.1063915598. The cubic root of 238922138 is about 620.5147805804.

The spelling of 238922138 in words is "two hundred thirty-eight million, nine hundred twenty-two thousand, one hundred thirty-eight".