305995394 has 16 divisors (see below), whose sum is σ = 468280440. Its totient is φ = 149909760.

The previous prime is 305995331. The next prime is 305995397. The reversal of 305995394 is 493599503.

It can be written as a sum of positive squares in 4 ways, for example, as 270438025 + 35557369 = 16445^2 + 5963^2 .

It is a super-2 number, since 2×305995394² = 187266362298430472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (305995397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105524 + ... + 108384.

Almost surely, 2^305995394 is an apocalyptic number.

305995394 is a deficient number, since it is larger than the sum of its proper divisors (162285046).

305995394 is a wasteful number, since it uses less digits than its factorization.

305995394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3925.

The product of its (nonzero) digits is 656100, while the sum is 47.

The square root of 305995394 is about 17492.7240302933. The cubic root of 305995394 is about 673.8630289866.

The spelling of 305995394 in words is "three hundred five million, nine hundred ninety-five thousand, three hundred ninety-four".