13249656 has 160 divisors (see below), whose sum is σ = 44605440. Its totient is φ = 3592512.

The previous prime is 13249609. The next prime is 13249657. The reversal of 13249656 is 65694231.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (38880) is a multiple of the sum of its prime divisors (162).

It is a self number, because there is not a number n which added to its sum of digits gives 13249656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13249657) 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 39 ways as a sum of consecutive naturals, for example, 104265 + ... + 104391.

It is an arithmetic number, because the mean of its divisors is an integer number (278784).

Almost surely, 2^13249656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13249656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22302720).

13249656 is an abundant number, since it is smaller than the sum of its proper divisors (31355784).

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

13249656 is a wasteful number, since it uses less digits than its factorization.

13249656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175 (or 162 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 13249656 is about 3640.0076922996. The cubic root of 13249656 is about 236.6291267134.

The spelling of 13249656 in words is "thirteen million, two hundred forty-nine thousand, six hundred fifty-six".