13391056 has 20 divisors (see below), whose sum is σ = 29651872. Its totient is φ = 5738976.

The previous prime is 13391041. The next prime is 13391057. The reversal of 13391056 is 65019331.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13391057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59670 + ... + 59893.

Almost surely, 2^13391056 is an apocalyptic number.

13391056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13391056 is an abundant number, since it is smaller than the sum of its proper divisors (16260816).

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

13391056 is a wasteful number, since it uses less digits than its factorization.

13391056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119578 (or 119572 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 13391056 is about 3659.3791823204. The cubic root of 13391056 is about 237.4679166264.

The spelling of 13391056 in words is "thirteen million, three hundred ninety-one thousand, fifty-six".