13856816 has 10 divisors (see below), whose sum is σ = 26847612. Its totient is φ = 6928400.

The previous prime is 13856789. The next prime is 13856831. The reversal of 13856816 is 61865831.

It is a happy number.

It is a super-2 number, since 2×13856816² = 384022699315712, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13856816.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433010 + ... + 433041.

Almost surely, 2^13856816 is an apocalyptic number.

13856816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13856816 is a deficient number, since it is larger than the sum of its proper divisors (12990796).

13856816 is an equidigital number, since it uses as much as digits as its factorization.

13856816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866059 (or 866053 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The square root of 13856816 is about 3722.4744458492. The cubic root of 13856816 is about 240.1897573352.

The spelling of 13856816 in words is "thirteen million, eight hundred fifty-six thousand, eight hundred sixteen".