11562228 has 36 divisors (see below), whose sum is σ = 29336580. Its totient is φ = 3839616.

The previous prime is 11562223. The next prime is 11562233. The reversal of 11562228 is 82226511.

It is a happy number.

11562228 is a `hidden beast` number, since 1 + 15 + 622 + 28 = 666.

11562228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11562223) and next prime (11562233).

It can be written as a sum of positive squares in 2 ways, for example, as 9072144 + 2490084 = 3012^2 + 1578^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11562223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13888 + ... + 14696.

It is an arithmetic number, because the mean of its divisors is an integer number (814905).

Almost surely, 2^11562228 is an apocalyptic number.

11562228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11562228 is an abundant number, since it is smaller than the sum of its proper divisors (17774352).

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

11562228 is a wasteful number, since it uses less digits than its factorization.

11562228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216 (or 1211 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 11562228 is about 3400.3276312732. The cubic root of 11562228 is about 226.1242692447.

Adding to 11562228 its reverse (82226511), we get a palindrome (93788739).

The spelling of 11562228 in words is "eleven million, five hundred sixty-two thousand, two hundred twenty-eight".