8104 has 8 divisors (see below), whose sum is σ = 15210. Its totient is φ = 4048.

The previous prime is 8101. The next prime is 8111. The reversal of 8104 is 4018.

8104 = T₇₂ + T₇₃ + T₇₄.

It can be written as a sum of positive squares in only one way, i.e., 8100 + 4 = 90^2 + 2^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (8101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499 + ... + 514.

2⁸¹⁰⁴ is an apocalyptic number.

8104 is the 74-th centered triangular number.

It is an amenable number.

8104 is a deficient number, since it is larger than the sum of its proper divisors (7106).

8104 is a wasteful number, since it uses less digits than its factorization.

8104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019 (or 1015 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 8104 is about 90.0222194794. The cubic root of 8104 is about 20.0862938002.

It can be divided in two parts, 810 and 4, that multiplied together give a triangular number (3240 = T₈₀).

The spelling of 8104 in words is "eight thousand, one hundred four".