306378506 has 16 divisors (see below), whose sum is σ = 525609216. Its totient is φ = 131207856.

The previous prime is 306378497. The next prime is 306378517. The reversal of 306378506 is 605873603.

306378506 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 306378506.

It is an unprimeable number.

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, 13460 + ... + 28176.

It is an arithmetic number, because the mean of its divisors is an integer number (32850576).

Almost surely, 2^306378506 is an apocalyptic number.

306378506 is a deficient number, since it is larger than the sum of its proper divisors (219230710).

306378506 is a wasteful number, since it uses less digits than its factorization.

306378506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16213.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 306378506 is about 17503.6712149195. The cubic root of 306378506 is about 674.1441414371.

The spelling of 306378506 in words is "three hundred six million, three hundred seventy-eight thousand, five hundred six".