306022928 has 20 divisors (see below), whose sum is σ = 597251580. Its totient is φ = 151893504.

The previous prime is 306022921. The next prime is 306022957. The reversal of 306022928 is 829220603.

It can be written as a sum of positive squares in 2 ways, for example, as 249892864 + 56130064 = 15808^2 + 7492^2 .

It is a junction number, because it is equal to n+sod(n) for n = 306022894 and 306022903.

It is not an unprimeable number, because it can be changed into a prime (306022921) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 67613 + ... + 71996.

It is an arithmetic number, because the mean of its divisors is an integer number (29862579).

Almost surely, 2^306022928 is an apocalyptic number.

It is an amenable number.

306022928 is a deficient number, since it is larger than the sum of its proper divisors (291228652).

306022928 is a wasteful number, since it uses less digits than its factorization.

306022928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139754 (or 139748 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 306022928 is about 17493.5110255203. The cubic root of 306022928 is about 673.8832401711.

The spelling of 306022928 in words is "three hundred six million, twenty-two thousand, nine hundred twenty-eight".