13122756 has 24 divisors (see below), whose sum is σ = 34022240. Its totient is φ = 4374216.

The previous prime is 13122751. The next prime is 13122757. The reversal of 13122756 is 65722131.

It is a happy number.

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 (13122751) 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, 60646 + ... + 60861.

Almost surely, 2^13122756 is an apocalyptic number.

It is an amenable number.

13122756 is an abundant number, since it is smaller than the sum of its proper divisors (20899484).

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

13122756 is a wasteful number, since it uses less digits than its factorization.

13122756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121520 (or 121512 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 13122756 is about 3622.5344718857. The cubic root of 13122756 is about 235.8712550683.

Adding to 13122756 its reverse (65722131), we get a palindrome (78844887).

The spelling of 13122756 in words is "thirteen million, one hundred twenty-two thousand, seven hundred fifty-six".