13406256 has 40 divisors (see below), whose sum is σ = 38482160. Its totient is φ = 4468608.

The previous prime is 13406249. The next prime is 13406257. The reversal of 13406256 is 65260431.

13406256 is a `hidden beast` number, since 1 + 3 + 406 + 256 = 666.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (13406257) 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, 15085 + ... + 15948.

It is an arithmetic number, because the mean of its divisors is an integer number (962054).

Almost surely, 2^13406256 is an apocalyptic number.

13406256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13406256 is an abundant number, since it is smaller than the sum of its proper divisors (25075904).

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

13406256 is a wasteful number, since it uses less digits than its factorization.

13406256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31050 (or 31038 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 13406256 is about 3661.4554483156. The cubic root of 13406256 is about 237.5577314872.

Adding to 13406256 its reverse (65260431), we get a palindrome (78666687).

The spelling of 13406256 in words is "thirteen million, four hundred six thousand, two hundred fifty-six".