238872491 has 32 divisors (see below), whose sum is σ = 300500928. Its totient is φ = 186531840.

The previous prime is 238872463. The next prime is 238872493. The reversal of 238872491 is 194278832.

It is not a de Polignac number, because 238872491 - 2¹⁰ = 238871467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (238872493) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 235301 + ... + 236313.

It is an arithmetic number, because the mean of its divisors is an integer number (9390654).

Almost surely, 2^238872491 is an apocalyptic number.

238872491 is a deficient number, since it is larger than the sum of its proper divisors (61628437).

238872491 is a wasteful number, since it uses less digits than its factorization.

238872491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151.

The product of its digits is 193536, while the sum is 44.

The square root of 238872491 is about 15455.5003477726. The cubic root of 238872491 is about 620.4717974959.

The spelling of 238872491 in words is "two hundred thirty-eight million, eight hundred seventy-two thousand, four hundred ninety-one".