238889564 has 12 divisors (see below), whose sum is σ = 419025264. Its totient is φ = 119168064.

The previous prime is 238889557. The next prime is 238889587. The reversal of 238889564 is 465988832.

It is a super-2 number, since 2×238889564² = 114136447576220192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67232 + ... + 70695.

It is an arithmetic number, because the mean of its divisors is an integer number (34918772).

Almost surely, 2^238889564 is an apocalyptic number.

It is an amenable number.

238889564 is a deficient number, since it is larger than the sum of its proper divisors (180135700).

238889564 is a wasteful number, since it uses less digits than its factorization.

238889564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138364 (or 138362 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 53.

The square root of 238889564 is about 15456.0526655417. The cubic root of 238889564 is about 620.4865795282.

The spelling of 238889564 in words is "two hundred thirty-eight million, eight hundred eighty-nine thousand, five hundred sixty-four".