78328286 has 8 divisors (see below), whose sum is σ = 120358224. Its totient is φ = 38208880.

The previous prime is 78328259. The next prime is 78328301. The reversal of 78328286 is 68282387.

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

It is a super-2 number, since 2×78328286² = 12270640775395592, which contains 22 as substring.

It is a Curzon number.

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, 477530 + ... + 477693.

It is an arithmetic number, because the mean of its divisors is an integer number (15044778).

Almost surely, 2^78328286 is an apocalyptic number.

78328286 is a deficient number, since it is larger than the sum of its proper divisors (42029938).

78328286 is a wasteful number, since it uses less digits than its factorization.

78328286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955266.

The product of its digits is 258048, while the sum is 44.

The square root of 78328286 is about 8850.3268866184. The cubic root of 78328286 is about 427.8644539769.

The spelling of 78328286 in words is "seventy-eight million, three hundred twenty-eight thousand, two hundred eighty-six".