238108920 has 64 divisors (see below), whose sum is σ = 816376320. Its totient is φ = 54424704.

The previous prime is 238108889. The next prime is 238108921. The reversal of 238108920 is 29801832.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238108921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140892 + ... + 142571.

It is an arithmetic number, because the mean of its divisors is an integer number (12755880).

Almost surely, 2^238108920 is an apocalyptic number.

238108920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238108920 is an abundant number, since it is smaller than the sum of its proper divisors (578267400).

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

238108920 is a wasteful number, since it uses less digits than its factorization.

238108920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283484 (or 283480 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 238108920 is about 15430.7783342254. The cubic root of 238108920 is about 619.8099660396.

The spelling of 238108920 in words is "two hundred thirty-eight million, one hundred eight thousand, nine hundred twenty".