307225472 has 32 divisors (see below), whose sum is σ = 613903320. Its totient is φ = 153147904.

The previous prime is 307225447. The next prime is 307225493. The reversal of 307225472 is 274522703.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40958 + ... + 47874.

Almost surely, 2^307225472 is an apocalyptic number.

307225472 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

307225472 is a deficient number, since it is larger than the sum of its proper divisors (306677848).

307225472 is an equidigital number, since it uses as much as digits as its factorization.

307225472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7278 (or 7266 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 307225472 is about 17527.8484703628. The cubic root of 307225472 is about 674.7647809594.

The spelling of 307225472 in words is "three hundred seven million, two hundred twenty-five thousand, four hundred seventy-two".