306426394 has 16 divisors (see below), whose sum is σ = 490990248. Its totient is φ = 142922752.

The previous prime is 306426391. The next prime is 306426403. The reversal of 306426394 is 493624603.

306426394 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 4 ways, for example, as 239104369 + 67322025 = 15463^2 + 8205^2 .

It is not an unprimeable number, because it can be changed into a prime (306426391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36037 + ... + 43720.

Almost surely, 2^306426394 is an apocalyptic number.

306426394 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

306426394 is a deficient number, since it is larger than the sum of its proper divisors (184563854).

306426394 is a wasteful number, since it uses less digits than its factorization.

306426394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79889.

The product of its (nonzero) digits is 93312, while the sum is 37.

The square root of 306426394 is about 17505.0391030697. The cubic root of 306426394 is about 674.1792632795.

The spelling of 306426394 in words is "three hundred six million, four hundred twenty-six thousand, three hundred ninety-four".