307390172 has 12 divisors (see below), whose sum is σ = 555285696. Its totient is φ = 148737120.

The previous prime is 307390157. The next prime is 307390183. The reversal of 307390172 is 271093703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1239353 + ... + 1239600.

It is an arithmetic number, because the mean of its divisors is an integer number (46273808).

Almost surely, 2^307390172 is an apocalyptic number.

It is an amenable number.

307390172 is a deficient number, since it is larger than the sum of its proper divisors (247895524).

307390172 is a wasteful number, since it uses less digits than its factorization.

307390172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2478988 (or 2478986 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 32.

The square root of 307390172 is about 17532.5460786504. The cubic root of 307390172 is about 674.8853372677.

The spelling of 307390172 in words is "three hundred seven million, three hundred ninety thousand, one hundred seventy-two".