13799856 has 80 divisors (see below), whose sum is σ = 41417984. Its totient is φ = 3877632.

The previous prime is 13799831. The next prime is 13799887. The reversal of 13799856 is 65899731.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 22206 + ... + 22818.

Almost surely, 2^13799856 is an apocalyptic number.

13799856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13799856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20708992).

13799856 is an abundant number, since it is smaller than the sum of its proper divisors (27618128).

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

13799856 is a wasteful number, since it uses less digits than its factorization.

13799856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698 (or 692 counting only the distinct ones).

The product of its digits is 408240, while the sum is 48.

The square root of 13799856 is about 3714.8157424023. The cubic root of 13799856 is about 239.8601963558.

The spelling of 13799856 in words is "thirteen million, seven hundred ninety-nine thousand, eight hundred fifty-six".