306890434 has 8 divisors (see below), whose sum is σ = 461640780. Its totient is φ = 153010176.

The previous prime is 306890417. The next prime is 306890459. The reversal of 306890434 is 434098603.

It can be written as a sum of positive squares in 2 ways, for example, as 306075025 + 815409 = 17495^2 + 903^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 306890393 and 306890402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216639 + ... + 218050.

Almost surely, 2^306890434 is an apocalyptic number.

306890434 is a deficient number, since it is larger than the sum of its proper divisors (154750346).

306890434 is a wasteful number, since it uses less digits than its factorization.

306890434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435044.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 306890434 is about 17518.2885579614. The cubic root of 306890434 is about 674.5194084318.

The spelling of 306890434 in words is "three hundred six million, eight hundred ninety thousand, four hundred thirty-four".