238815915 has 64 divisors (see below), whose sum is σ = 443221632. Its totient is φ = 108748800.

The previous prime is 238815901. The next prime is 238815943. The reversal of 238815915 is 519518832.

238815915 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 238815915 - 2¹² = 238811819 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 201625 + ... + 202805.

It is an arithmetic number, because the mean of its divisors is an integer number (6925338).

Almost surely, 2^238815915 is an apocalyptic number.

238815915 is a deficient number, since it is larger than the sum of its proper divisors (204405717).

238815915 is a wasteful number, since it uses less digits than its factorization.

238815915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280.

The product of its digits is 86400, while the sum is 42.

The square root of 238815915 is about 15453.6699524741. The cubic root of 238815915 is about 620.4228082017.

The spelling of 238815915 in words is "two hundred thirty-eight million, eight hundred fifteen thousand, nine hundred fifteen".