11643228 has 36 divisors (see below), whose sum is σ = 30383808. Its totient is φ = 3755520.

The previous prime is 11643217. The next prime is 11643241. The reversal of 11643228 is 82234611.

11643228 is a `hidden beast` number, since 11 + 643 + 2 + 2 + 8 = 666.

11643228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4101 + ... + 6332.

Almost surely, 2^11643228 is an apocalyptic number.

11643228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11643228 is an abundant number, since it is smaller than the sum of its proper divisors (18740580).

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

11643228 is a wasteful number, since it uses less digits than its factorization.

11643228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10474 (or 10469 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 11643228 is about 3412.2174608310. The cubic root of 11643228 is about 226.6510840883.

Adding to 11643228 its reverse (82234611), we get a palindrome (93877839).

The spelling of 11643228 in words is "eleven million, six hundred forty-three thousand, two hundred twenty-eight".