78104 has 16 divisors (see below), whose sum is σ = 157920. Its totient is φ = 36000.

The previous prime is 78101. The next prime is 78121. The reversal of 78104 is 40187.

It is a happy number.

It is a super-2 number, since 2×78104² = 12200469632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272 + ... + 479.

It is an arithmetic number, because the mean of its divisors is an integer number (9870).

2⁷⁸¹⁰⁴ is an apocalyptic number.

It is an amenable number.

78104 is an abundant number, since it is smaller than the sum of its proper divisors (79816).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78960).

78104 is a wasteful number, since it uses less digits than its factorization.

78104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770 (or 766 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 78104 is about 279.4709287207. The cubic root of 78104 is about 42.7455679775.

The spelling of 78104 in words is "seventy-eight thousand, one hundred four".