306430940 has 12 divisors (see below), whose sum is σ = 643505016. Its totient is φ = 122572368.

The previous prime is 306430931. The next prime is 306430951. The reversal of 306430940 is 49034603.

It is a happy number.

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, 7660754 + ... + 7660793.

It is an arithmetic number, because the mean of its divisors is an integer number (53625418).

Almost surely, 2^306430940 is an apocalyptic number.

It is an amenable number.

306430940 is an abundant number, since it is smaller than the sum of its proper divisors (337074076).

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

306430940 is a wasteful number, since it uses less digits than its factorization.

306430940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15321556 (or 15321554 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 306430940 is about 17505.1689509128. The cubic root of 306430940 is about 674.1825972000.

The spelling of 306430940 in words is "three hundred six million, four hundred thirty thousand, nine hundred forty".