238634940 has 48 divisors (see below), whose sum is σ = 679512960. Its totient is φ = 62556480.

The previous prime is 238634909. The next prime is 238634983. The reversal of 238634940 is 49436832.

238634940 is digitally balanced in base 3, 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 15 ways as a sum of consecutive naturals, for example, 30166 + ... + 37245.

It is an arithmetic number, because the mean of its divisors is an integer number (14156520).

Almost surely, 2^238634940 is an apocalyptic number.

238634940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238634940 is an abundant number, since it is smaller than the sum of its proper divisors (440878020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

238634940 is a wasteful number, since it uses less digits than its factorization.

238634940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67482 (or 67480 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 238634940 is about 15447.8134375063. The cubic root of 238634940 is about 620.2660495369.

The spelling of 238634940 in words is "two hundred thirty-eight million, six hundred thirty-four thousand, nine hundred forty".