306432912 has 80 divisors (see below), whose sum is σ = 836980160. Its totient is φ = 96339456.

The previous prime is 306432911. The next prime is 306432949. The reversal of 306432912 is 219234603.

It is a super-2 number, since 2×306432912² = 187802259113599488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 306432912.

It is not an unprimeable number, because it can be changed into a prime (306432911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252018 + ... + 253230.

It is an arithmetic number, because the mean of its divisors is an integer number (10462252).

Almost surely, 2^306432912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 306432912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (418490080).

306432912 is an abundant number, since it is smaller than the sum of its proper divisors (530547248).

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

306432912 is a wasteful number, since it uses less digits than its factorization.

306432912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520 (or 1514 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 306432912 is about 17505.2252770423. The cubic root of 306432912 is about 674.1840434043.

The spelling of 306432912 in words is "three hundred six million, four hundred thirty-two thousand, nine hundred twelve".