13213256 has 16 divisors (see below), whose sum is σ = 28314240. Its totient is φ = 5662800.

The previous prime is 13213253. The next prime is 13213259. The reversal of 13213256 is 65231231.

It is an interprime number because it is at equal distance from previous prime (13213253) and next prime (13213259).

It is not an unprimeable number, because it can be changed into a prime (13213253) 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 3 ways as a sum of consecutive naturals, for example, 117920 + ... + 118031.

It is an arithmetic number, because the mean of its divisors is an integer number (1769640).

Almost surely, 2^13213256 is an apocalyptic number.

It is an amenable number.

13213256 is an abundant number, since it is smaller than the sum of its proper divisors (15100984).

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

13213256 is a wasteful number, since it uses less digits than its factorization.

13213256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235964 (or 235960 counting only the distinct ones).

The product of its digits is 1080, while the sum is 23.

The square root of 13213256 is about 3635.0042640965. The cubic root of 13213256 is about 236.4122355509.

Adding to 13213256 its reverse (65231231), we get a palindrome (78444487).

The spelling of 13213256 in words is "thirteen million, two hundred thirteen thousand, two hundred fifty-six".