13911808 has 36 divisors (see below), whose sum is σ = 28681408. Its totient is φ = 6727680.

The previous prime is 13911791. The next prime is 13911817. The reversal of 13911808 is 80811931.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a self number, because there is not a number n which added to its sum of digits gives 13911808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7060 + ... + 8812.

Almost surely, 2^13911808 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 13911808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14340704).

13911808 is an abundant number, since it is smaller than the sum of its proper divisors (14769600).

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

13911808 is an equidigital number, since it uses as much as digits as its factorization.

13911808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800 (or 1786 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 31.

The square root of 13911808 is about 3729.8536164305. The cubic root of 13911808 is about 240.5070760348.

The spelling of 13911808 in words is "thirteen million, nine hundred eleven thousand, eight hundred eight".