306161604 has 54 divisors (see below), whose sum is σ = 900266094. Its totient is φ = 87474240.

The previous prime is 306161563. The next prime is 306161617. The reversal of 306161604 is 406161603.

306161604 is a `hidden beast` number, since 30 + 616 + 16 + 0 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 208744704 + 97416900 = 14448^2 + 9870^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 85017 + ... + 88544.

Almost surely, 2^306161604 is an apocalyptic number.

It is an amenable number.

306161604 is an abundant number, since it is smaller than the sum of its proper divisors (594104490).

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

306161604 is a wasteful number, since it uses less digits than its factorization.

306161604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173585 (or 173573 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 306161604 is about 17497.4742177264. The cubic root of 306161604 is about 673.9850161180.

Subtracting 306161604 from its reverse (406161603), we obtain a palindrome (99999999).

The spelling of 306161604 in words is "three hundred six million, one hundred sixty-one thousand, six hundred four".