306663424 has 26 divisors (see below), whose sum is σ = 613260170. Its totient is φ = 153329664.

The previous prime is 306663389. The next prime is 306663457. The reversal of 306663424 is 424366603.

It can be written as a sum of positive squares in only one way, i.e., 232013824 + 74649600 = 15232^2 + 8640^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 306663424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33339 + ... + 41530.

Almost surely, 2^306663424 is an apocalyptic number.

It is an amenable number.

306663424 is a deficient number, since it is larger than the sum of its proper divisors (306596746).

306663424 is an frugal number, since it uses more digits than its factorization.

306663424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74893 (or 74871 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 34.

The square root of 306663424 is about 17511.8081305158. The cubic root of 306663424 is about 674.3530510994.

The spelling of 306663424 in words is "three hundred six million, six hundred sixty-three thousand, four hundred twenty-four".