13043856 has 40 divisors (see below), whose sum is σ = 38511424. Its totient is φ = 3726720.

The previous prime is 13043837. The next prime is 13043857. The reversal of 13043856 is 65834031.

It is not an unprimeable number, because it can be changed into a prime (13043857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19075 + ... + 19746.

Almost surely, 2^13043856 is an apocalyptic number.

13043856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13043856 is an abundant number, since it is smaller than the sum of its proper divisors (25467568).

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

13043856 is a wasteful number, since it uses less digits than its factorization.

13043856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38839 (or 38833 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 13043856 is about 3611.6278878090. The cubic root of 13043856 is about 235.3975825951.

Adding to 13043856 its reverse (65834031), we get a palindrome (78877887).

The spelling of 13043856 in words is "thirteen million, forty-three thousand, eight hundred fifty-six".