306109172 has 12 divisors (see below), whose sum is σ = 535832640. Its totient is φ = 153014136.

The previous prime is 306109151. The next prime is 306109189. The reversal of 306109172 is 271901603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12563 + ... + 27749.

It is an arithmetic number, because the mean of its divisors is an integer number (44652720).

Almost surely, 2^306109172 is an apocalyptic number.

It is an amenable number.

306109172 is a deficient number, since it is larger than the sum of its proper divisors (229723468).

306109172 is a wasteful number, since it uses less digits than its factorization.

306109172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20230 (or 20228 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 306109172 is about 17495.9758801846. The cubic root of 306109172 is about 673.9465392707.

The spelling of 306109172 in words is "three hundred six million, one hundred nine thousand, one hundred seventy-two".