238409604 has 18 divisors (see below), whose sum is σ = 602646590. Its totient is φ = 79469856.

The previous prime is 238409599. The next prime is 238409617. The reversal of 238409604 is 406904832.

It is a happy number.

238409604 is a `hidden beast` number, since 2 + 3 + 8 + 40 + 9 + 604 = 666.

It can be written as a sum of positive squares in only one way, i.e., 236852100 + 1557504 = 15390^2 + 1248^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 6622489 = 238409604 / (2 + 3 + 8 + 4 + 0 + 9 + 6 + 0 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3311209 + ... + 3311280.

Almost surely, 2^238409604 is an apocalyptic number.

It is an amenable number.

238409604 is an abundant number, since it is smaller than the sum of its proper divisors (364236986).

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

238409604 is a wasteful number, since it uses less digits than its factorization.

238409604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6622499 (or 6622494 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 238409604 is about 15440.5182555509. The cubic root of 238409604 is about 620.0707550191.

The spelling of 238409604 in words is "two hundred thirty-eight million, four hundred nine thousand, six hundred four".