13856406 has 24 divisors (see below), whose sum is σ = 28395000. Its totient is φ = 4507776.

The previous prime is 13856369. The next prime is 13856413. The reversal of 13856406 is 60465831.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10470 + ... + 11718.

It is an arithmetic number, because the mean of its divisors is an integer number (1183125).

Almost surely, 2^13856406 is an apocalyptic number.

13856406 is an abundant number, since it is smaller than the sum of its proper divisors (14538594).

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

13856406 is a wasteful number, since it uses less digits than its factorization.

13856406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340 (or 1297 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 13856406 is about 3722.4193745466. The cubic root of 13856406 is about 240.1873883741.

The spelling of 13856406 in words is "thirteen million, eight hundred fifty-six thousand, four hundred six".