78027684 has 48 divisors (see below), whose sum is σ = 217125888. Its totient is φ = 21323808.

The previous prime is 78027683. The next prime is 78027689. The reversal of 78027684 is 48672087.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (78027683) 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 in 15 ways as a sum of consecutive naturals, for example, 18262 + ... + 22125.

It is an arithmetic number, because the mean of its divisors is an integer number (4523456).

Almost surely, 2^78027684 is an apocalyptic number.

It is an amenable number.

78027684 is an abundant number, since it is smaller than the sum of its proper divisors (139098204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78027684 is a wasteful number, since it uses less digits than its factorization.

78027684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40424 (or 40422 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 78027684 is about 8833.3280251556. The cubic root of 78027684 is about 427.3164110295.

The spelling of 78027684 in words is "seventy-eight million, twenty-seven thousand, six hundred eighty-four".