78804 has 36 divisors (see below), whose sum is σ = 218400. Its totient is φ = 23760.

The previous prime is 78803. The next prime is 78809. The reversal of 78804 is 40887.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 297 + ... + 495.

2⁷⁸⁸⁰⁴ 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 78804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109200).

78804 is an abundant number, since it is smaller than the sum of its proper divisors (139596).

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

78804 is a wasteful number, since it uses less digits than its factorization.

78804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 78804 is about 280.7205015670. The cubic root of 78804 is about 42.8728894518.

The spelling of 78804 in words is "seventy-eight thousand, eight hundred four".