239128930 has 32 divisors (see below), whose sum is σ = 451557504. Its totient is φ = 91001856.

The previous prime is 239128909. The next prime is 239128943. The reversal of 239128930 is 39821932.

It is a self number, because there is not a number n which added to its sum of digits gives 239128930.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41697 + ... + 47083.

It is an arithmetic number, because the mean of its divisors is an integer number (14111172).

Almost surely, 2^239128930 is an apocalyptic number.

239128930 is a deficient number, since it is larger than the sum of its proper divisors (212428574).

239128930 is a wasteful number, since it uses less digits than its factorization.

239128930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5610.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 239128930 is about 15463.7941657279. The cubic root of 239128930 is about 620.6937517031.

The spelling of 239128930 in words is "two hundred thirty-nine million, one hundred twenty-eight thousand, nine hundred thirty".