328978778 has 8 divisors (see below), whose sum is σ = 494118900. Its totient is φ = 164272480.

The previous prime is 328978759. The next prime is 328978801. The reversal of 328978778 is 877879823.

328978778 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 2 ways, for example, as 229916569 + 99062209 = 15163^2 + 9953^2 .

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

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, 106553 + ... + 109596.

Almost surely, 2^328978778 is an apocalyptic number.

328978778 is a deficient number, since it is larger than the sum of its proper divisors (165140122).

328978778 is a wasteful number, since it uses less digits than its factorization.

328978778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216912.

The product of its digits is 9483264, while the sum is 59.

The square root of 328978778 is about 18137.7721344161. The cubic root of 328978778 is about 690.3287504344.

The spelling of 328978778 in words is "three hundred twenty-eight million, nine hundred seventy-eight thousand, seven hundred seventy-eight".