11256564 has 48 divisors (see below), whose sum is σ = 29211840. Its totient is φ = 3344640.

The previous prime is 11256563. The next prime is 11256577. The reversal of 11256564 is 46565211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11256563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6192 + ... + 7800.

It is an arithmetic number, because the mean of its divisors is an integer number (608580).

Almost surely, 2^11256564 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 11256564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14605920).

11256564 is an abundant number, since it is smaller than the sum of its proper divisors (17955276).

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

11256564 is a wasteful number, since it uses less digits than its factorization.

11256564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680 (or 1678 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 11256564 is about 3355.0803269072. The cubic root of 11256564 is about 224.1138080264.

The spelling of 11256564 in words is "eleven million, two hundred fifty-six thousand, five hundred sixty-four".