78330328 has 16 divisors (see below), whose sum is σ = 146972880. Its totient is φ = 39137568.

The previous prime is 78330319. The next prime is 78330361. The reversal of 78330328 is 82303387.

It is a happy number.

It is a super-2 number, since 2×78330328² = 12271280569175168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78330293 and 78330302.

It is a congruent number.

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, 13525 + ... + 18427.

It is an arithmetic number, because the mean of its divisors is an integer number (9185805).

Almost surely, 2^78330328 is an apocalyptic number.

It is an amenable number.

78330328 is a deficient number, since it is larger than the sum of its proper divisors (68642552).

78330328 is a wasteful number, since it uses less digits than its factorization.

78330328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6906 (or 6902 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 78330328 is about 8850.4422488371. The cubic root of 78330328 is about 427.8681720532.

The spelling of 78330328 in words is "seventy-eight million, three hundred thirty thousand, three hundred twenty-eight".