11256638 has 4 divisors (see below), whose sum is σ = 16884960. Its totient is φ = 5628318.

The previous prime is 11256629. The next prime is 11256643. The reversal of 11256638 is 83665211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2814158 + ... + 2814161.

It is an arithmetic number, because the mean of its divisors is an integer number (4221240).

Almost surely, 2^11256638 is an apocalyptic number.

11256638 is a deficient number, since it is larger than the sum of its proper divisors (5628322).

11256638 is an equidigital number, since it uses as much as digits as its factorization.

11256638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5628321.

The product of its digits is 8640, while the sum is 32.

The square root of 11256638 is about 3355.0913549410. The cubic root of 11256638 is about 224.1142991291.

The spelling of 11256638 in words is "eleven million, two hundred fifty-six thousand, six hundred thirty-eight".