306878328 has 128 divisors (see below), whose sum is σ = 896716800. Its totient is φ = 97054848.

The previous prime is 306878263. The next prime is 306878353. The reversal of 306878328 is 823878603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1107726 + ... + 1108002.

It is an arithmetic number, because the mean of its divisors is an integer number (7005600).

Almost surely, 2^306878328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 306878328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (448358400).

306878328 is an abundant number, since it is smaller than the sum of its proper divisors (589838472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

306878328 is a wasteful number, since it uses less digits than its factorization.

306878328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538 (or 528 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 306878328 is about 17517.9430299336. The cubic root of 306878328 is about 674.5105389913.

The spelling of 306878328 in words is "three hundred six million, eight hundred seventy-eight thousand, three hundred twenty-eight".