13256646 has 16 divisors (see below), whose sum is σ = 28552944. Its totient is φ = 4078944.

The previous prime is 13256597. The next prime is 13256647. The reversal of 13256646 is 64665231.

13256646 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13256647) 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, 84901 + ... + 85056.

It is an arithmetic number, because the mean of its divisors is an integer number (1784559).

Almost surely, 2^13256646 is an apocalyptic number.

13256646 is an abundant number, since it is smaller than the sum of its proper divisors (15296298).

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

13256646 is a wasteful number, since it uses less digits than its factorization.

13256646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169975.

The product of its digits is 25920, while the sum is 33.

The square root of 13256646 is about 3640.9677285030. The cubic root of 13256646 is about 236.6707314870.

The spelling of 13256646 in words is "thirteen million, two hundred fifty-six thousand, six hundred forty-six".