78085828 has 24 divisors (see below), whose sum is σ = 150982272. Its totient is φ = 35147904.

The previous prime is 78085789. The next prime is 78085829. The reversal of 78085828 is 82858087.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (78085829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23400 + ... + 26527.

It is an arithmetic number, because the mean of its divisors is an integer number (6290928).

Almost surely, 2^78085828 is an apocalyptic number.

It is an amenable number.

78085828 is a deficient number, since it is larger than the sum of its proper divisors (72896444).

78085828 is a wasteful number, since it uses less digits than its factorization.

78085828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49971 (or 49969 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 46.

The square root of 78085828 is about 8836.6185840513. The cubic root of 78085828 is about 427.4225260014.

The spelling of 78085828 in words is "seventy-eight million, eighty-five thousand, eight hundred twenty-eight".