238887128 has 16 divisors (see below), whose sum is σ = 474261480. Its totient is φ = 112417408.

The previous prime is 238887109. The next prime is 238887137. The reversal of 238887128 is 821788832.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 878126 + ... + 878397.

Almost surely, 2^238887128 is an apocalyptic number.

It is an amenable number.

238887128 is a deficient number, since it is larger than the sum of its proper divisors (235374352).

238887128 is a wasteful number, since it uses less digits than its factorization.

238887128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1756546 (or 1756542 counting only the distinct ones).

The product of its digits is 344064, while the sum is 47.

The square root of 238887128 is about 15455.9738612615. The cubic root of 238887128 is about 620.4844704498.

The spelling of 238887128 in words is "two hundred thirty-eight million, eight hundred eighty-seven thousand, one hundred twenty-eight".