13611904 has 64 divisors (see below), whose sum is σ = 29682000. Its totient is φ = 6193152.

The previous prime is 13611887. The next prime is 13611919. The reversal of 13611904 is 40911631.

13611904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70432 + ... + 70624.

Almost surely, 2^13611904 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 13611904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14841000).

13611904 is an abundant number, since it is smaller than the sum of its proper divisors (16070096).

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

13611904 is a wasteful number, since it uses less digits than its factorization.

13611904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 13611904 is about 3689.4313925048. The cubic root of 13611904 is about 238.7662613304.

The spelling of 13611904 in words is "thirteen million, six hundred eleven thousand, nine hundred four".