238912930 has 16 divisors (see below), whose sum is σ = 433184760. Its totient is φ = 94867072.

The previous prime is 238912913. The next prime is 238912931. The reversal of 238912930 is 39219832.

238912930 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 169806961 + 69105969 = 13031^2 + 8313^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 238912930.

It is not an unprimeable number, because it can be changed into a prime (238912931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85825 + ... + 88564.

Almost surely, 2^238912930 is an apocalyptic number.

238912930 is a deficient number, since it is larger than the sum of its proper divisors (194271830).

238912930 is a wasteful number, since it uses less digits than its factorization.

238912930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174533.

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

The square root of 238912930 is about 15456.8085321647. The cubic root of 238912930 is about 620.5068089827.

The spelling of 238912930 in words is "two hundred thirty-eight million, nine hundred twelve thousand, nine hundred thirty".