306407990 has 16 divisors (see below), whose sum is σ = 630325152. Its totient is φ = 105054144.

The previous prime is 306407987. The next prime is 306408007. The reversal of 306407990 is 99704603.

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 7 ways as a sum of consecutive naturals, for example, 2188559 + ... + 2188698.

It is an arithmetic number, because the mean of its divisors is an integer number (39395322).

Almost surely, 2^306407990 is an apocalyptic number.

306407990 is an abundant number, since it is smaller than the sum of its proper divisors (323917162).

306407990 is a wasteful number, since it uses less digits than its factorization.

306407990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4377271.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 306407990 is about 17504.5134179731. The cubic root of 306407990 is about 674.1657659178.

The spelling of 306407990 in words is "three hundred six million, four hundred seven thousand, nine hundred ninety".