306804478 has 8 divisors (see below), whose sum is σ = 461677968. Its totient is φ = 152911824.

The previous prime is 306804431. The next prime is 306804493. The reversal of 306804478 is 874408603.

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

It is a self number, because there is not a number n which added to its sum of digits gives 306804478.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244426 + ... + 245677.

It is an arithmetic number, because the mean of its divisors is an integer number (57709746).

Almost surely, 2^306804478 is an apocalyptic number.

306804478 is a deficient number, since it is larger than the sum of its proper divisors (154873490).

306804478 is a wasteful number, since it uses less digits than its factorization.

306804478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490418.

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 306804478 is about 17515.8350643068. The cubic root of 306804478 is about 674.4564278610.

The spelling of 306804478 in words is "three hundred six million, eight hundred four thousand, four hundred seventy-eight".