11656228 has 12 divisors (see below), whose sum is σ = 20432412. Its totient is φ = 5818400.

The previous prime is 11656181. The next prime is 11656261. The reversal of 11656228 is 82265611.

It can be written as a sum of positive squares in 2 ways, for example, as 7884864 + 3771364 = 2808^2 + 1942^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11656228.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 726 + ... + 4882.

It is an arithmetic number, because the mean of its divisors is an integer number (1702701).

Almost surely, 2^11656228 is an apocalyptic number.

It is an amenable number.

11656228 is a deficient number, since it is larger than the sum of its proper divisors (8776184).

11656228 is a wasteful number, since it uses less digits than its factorization.

11656228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4862 (or 4860 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 11656228 is about 3414.1218490265. The cubic root of 11656228 is about 226.7354068715.

The spelling of 11656228 in words is "eleven million, six hundred fifty-six thousand, two hundred twenty-eight".