13381256 has 32 divisors (see below), whose sum is σ = 29346240. Its totient is φ = 5600448.

The previous prime is 13381241. The next prime is 13381271. The reversal of 13381256 is 65218331.

It is an interprime number because it is at equal distance from previous prime (13381241) and next prime (13381271).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371 + ... + 5186.

It is an arithmetic number, because the mean of its divisors is an integer number (917070).

Almost surely, 2^13381256 is an apocalyptic number.

It is an amenable number.

13381256 is an abundant number, since it is smaller than the sum of its proper divisors (15964984).

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

13381256 is a wasteful number, since it uses less digits than its factorization.

13381256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5613 (or 5609 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 13381256 is about 3658.0399123028. The cubic root of 13381256 is about 237.4099736353.

Adding to 13381256 its reverse (65218331), we get a palindrome (78599587).

The spelling of 13381256 in words is "thirteen million, three hundred eighty-one thousand, two hundred fifty-six".