11543228 has 6 divisors (see below), whose sum is σ = 20200656. Its totient is φ = 5771612.

The previous prime is 11543227. The next prime is 11543249. The reversal of 11543228 is 82234511.

It is a super-2 number, since 2×11543228² = 266492225319968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11543197 and 11543206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11543227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1442900 + ... + 1442907.

It is an arithmetic number, because the mean of its divisors is an integer number (3366776).

Almost surely, 2^11543228 is an apocalyptic number.

It is an amenable number.

11543228 is a deficient number, since it is larger than the sum of its proper divisors (8657428).

11543228 is a wasteful number, since it uses less digits than its factorization.

11543228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2885811 (or 2885809 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 11543228 is about 3397.5326341332. The cubic root of 11543228 is about 226.0003393631. Note that the first 3 decimals are identical.

Adding to 11543228 its reverse (82234511), we get a palindrome (93777739).

The spelling of 11543228 in words is "eleven million, five hundred forty-three thousand, two hundred twenty-eight".