13163904 has 128 divisors (see below), whose sum is σ = 41983200. Its totient is φ = 4036608.

The previous prime is 13163879. The next prime is 13163963. The reversal of 13163904 is 40936131.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44782 + ... + 45074.

Almost surely, 2^13163904 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 13163904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20991600).

13163904 is an abundant number, since it is smaller than the sum of its proper divisors (28819296).

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

13163904 is a wasteful number, since it uses less digits than its factorization.

13163904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 13163904 is about 3628.2094757607. The cubic root of 13163904 is about 236.1175321878.

The spelling of 13163904 in words is "thirteen million, one hundred sixty-three thousand, nine hundred four".