11645228 has 12 divisors (see below), whose sum is σ = 23290512. Its totient is φ = 4990800.

The previous prime is 11645219. The next prime is 11645287. The reversal of 11645228 is 82254611.

11645228 is an admirable number.

It is a super-2 number, since 2×11645228² = 271222670343968, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 11645228.

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, 207923 + ... + 207978.

It is an arithmetic number, because the mean of its divisors is an integer number (1940876).

Almost surely, 2^11645228 is an apocalyptic number.

It is an amenable number.

11645228 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11645228 is a wasteful number, since it uses less digits than its factorization.

11645228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415912 (or 415910 counting only the distinct ones).

The product of its digits is 3840, while the sum is 29.

The square root of 11645228 is about 3412.5105128043. The cubic root of 11645228 is about 226.6640609081.

Adding to 11645228 its reverse (82254611), we get a palindrome (93899839).

The spelling of 11645228 in words is "eleven million, six hundred forty-five thousand, two hundred twenty-eight".