78889804 has 36 divisors (see below), whose sum is σ = 162887760. Its totient is φ = 33327840.

The previous prime is 78889801. The next prime is 78889807. The reversal of 78889804 is 40898887.

It is an interprime number because it is at equal distance from previous prime (78889801) and next prime (78889807).

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (78889801) 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 11 ways as a sum of consecutive naturals, for example, 11082 + ... + 16750.

It is an arithmetic number, because the mean of its divisors is an integer number (4524660).

Almost surely, 2^78889804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78889804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81443880).

78889804 is an abundant number, since it is smaller than the sum of its proper divisors (83997956).

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

78889804 is a wasteful number, since it uses less digits than its factorization.

78889804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5758 (or 5749 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 52.

The square root of 78889804 is about 8881.9932447621. The cubic root of 78889804 is about 428.8844420816.

The spelling of 78889804 in words is "seventy-eight million, eight hundred eighty-nine thousand, eight hundred four".