328778342 has 4 divisors (see below), whose sum is σ = 493167516. Its totient is φ = 164389170.

The previous prime is 328778321. The next prime is 328778347. The reversal of 328778342 is 243877823.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 328778293 and 328778302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328778347) by changing a digit.

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 as a sum of consecutive naturals, namely, 82194584 + ... + 82194587.

It is an arithmetic number, because the mean of its divisors is an integer number (123291879).

Almost surely, 2^328778342 is an apocalyptic number.

328778342 is a deficient number, since it is larger than the sum of its proper divisors (164389174).

328778342 is a wasteful number, since it uses less digits than its factorization.

328778342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164389173.

The product of its digits is 451584, while the sum is 44.

The square root of 328778342 is about 18132.2459171499. The cubic root of 328778342 is about 690.1885237156.

The spelling of 328778342 in words is "three hundred twenty-eight million, seven hundred seventy-eight thousand, three hundred forty-two".