306530768 has 20 divisors (see below), whose sum is σ = 594368580. Its totient is φ = 153145344.

The previous prime is 306530753. The next prime is 306530771. The reversal of 306530768 is 867035603.

It can be written as a sum of positive squares in 2 ways, for example, as 13162384 + 293368384 = 3628^2 + 17128^2 .

It is a super-2 number, since 2×306530768² = 187922223461339648, which contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 15746 + ... + 29342.

It is an arithmetic number, because the mean of its divisors is an integer number (29718429).

Almost surely, 2^306530768 is an apocalyptic number.

It is an amenable number.

306530768 is a deficient number, since it is larger than the sum of its proper divisors (287837812).

306530768 is a wasteful number, since it uses less digits than its factorization.

306530768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15014 (or 15008 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 306530768 is about 17508.0201050833. The cubic root of 306530768 is about 674.2558002009.

It can be divided in two parts, 3065 and 30768, that added together give a palindrome (33833).

The spelling of 306530768 in words is "three hundred six million, five hundred thirty thousand, seven hundred sixty-eight".