11223144 has 64 divisors (see below), whose sum is σ = 31449600. Its totient is φ = 3708288.

The previous prime is 11223139. The next prime is 11223151. The reversal of 11223144 is 44132211.

It is a super-2 number, since 2×11223144² = 251917922489472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48052 + ... + 48284.

It is an arithmetic number, because the mean of its divisors is an integer number (491400).

Almost surely, 2^11223144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11223144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15724800).

11223144 is an abundant number, since it is smaller than the sum of its proper divisors (20226456).

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

11223144 is a wasteful number, since it uses less digits than its factorization.

11223144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471 (or 461 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 11223144 is about 3350.0961180241. The cubic root of 11223144 is about 223.8917951032.

Adding to 11223144 its reverse (44132211), we get a palindrome (55355355).

The spelling of 11223144 in words is "eleven million, two hundred twenty-three thousand, one hundred forty-four".