13904856 has 96 divisors (see below), whose sum is σ = 44029440. Its totient is φ = 3881664.

The previous prime is 13904843. The next prime is 13904887. The reversal of 13904856 is 65840931.

13904856 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 13904856.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23395 + ... + 23981.

It is an arithmetic number, because the mean of its divisors is an integer number (458640).

Almost surely, 2^13904856 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 13904856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22014720).

13904856 is an abundant number, since it is smaller than the sum of its proper divisors (30124584).

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

13904856 is a wasteful number, since it uses less digits than its factorization.

13904856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653 (or 646 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 13904856 is about 3728.9215599151. The cubic root of 13904856 is about 240.4670073445.

The spelling of 13904856 in words is "thirteen million, nine hundred four thousand, eight hundred fifty-six".