306628930 has 16 divisors (see below), whose sum is σ = 557398584. Its totient is φ = 121436800.

The previous prime is 306628921. The next prime is 306628991. The reversal of 306628930 is 39826603.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 246395809 + 60233121 = 15697^2 + 7761^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 306628930.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150787 + ... + 152806.

Almost surely, 2^306628930 is an apocalyptic number.

306628930 is a deficient number, since it is larger than the sum of its proper divisors (250769654).

306628930 is a wasteful number, since it uses less digits than its factorization.

306628930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303701.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 306628930 is about 17510.8232245089. The cubic root of 306628930 is about 674.3277660425.

The spelling of 306628930 in words is "three hundred six million, six hundred twenty-eight thousand, nine hundred thirty".