13791856 has 40 divisors (see below), whose sum is σ = 29275904. Its totient is φ = 6255360.

The previous prime is 13791829. The next prime is 13791857. The reversal of 13791856 is 65819731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13791857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12145 + ... + 13231.

Almost surely, 2^13791856 is an apocalyptic number.

13791856 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 13791856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14637952).

13791856 is an abundant number, since it is smaller than the sum of its proper divisors (15484048).

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

13791856 is a wasteful number, since it uses less digits than its factorization.

13791856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169 (or 1163 counting only the distinct ones).

The product of its digits is 45360, while the sum is 40.

The square root of 13791856 is about 3713.7388168798. The cubic root of 13791856 is about 239.8138371162.

The spelling of 13791856 in words is "thirteen million, seven hundred ninety-one thousand, eight hundred fifty-six".