305680456 has 16 divisors (see below), whose sum is σ = 574166700. Its totient is φ = 152569344.

The previous prime is 305680423. The next prime is 305680457. The reversal of 305680456 is 654086503.

305680456 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 274432356 + 31248100 = 16566^2 + 5590^2 .

It is not an unprimeable number, because it can be changed into a prime (305680457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29025 + ... + 38128.

Almost surely, 2^305680456 is an apocalyptic number.

It is an amenable number.

305680456 is a deficient number, since it is larger than the sum of its proper divisors (268486244).

305680456 is a wasteful number, since it uses less digits than its factorization.

305680456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67728 (or 67724 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 305680456 is about 17483.7197415195. The cubic root of 305680456 is about 673.6317641489.

The spelling of 305680456 in words is "three hundred five million, six hundred eighty thousand, four hundred fifty-six".