238166988 has 24 divisors (see below), whose sum is σ = 562759680. Its totient is φ = 78383760.

The previous prime is 238166969. The next prime is 238166993. The reversal of 238166988 is 889661832.

It is a self number, because there is not a number n which added to its sum of digits gives 238166988.

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 7 ways as a sum of consecutive naturals, for example, 124668 + ... + 126563.

It is an arithmetic number, because the mean of its divisors is an integer number (23448320).

Almost surely, 2^238166988 is an apocalyptic number.

It is an amenable number.

238166988 is an abundant number, since it is smaller than the sum of its proper divisors (324592692).

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

238166988 is a wasteful number, since it uses less digits than its factorization.

238166988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251317 (or 251315 counting only the distinct ones).

The product of its digits is 995328, while the sum is 51.

The square root of 238166988 is about 15432.6597837184. The cubic root of 238166988 is about 619.8603466242.

The spelling of 238166988 in words is "two hundred thirty-eight million, one hundred sixty-six thousand, nine hundred eighty-eight".