11144220 has 24 divisors (see below), whose sum is σ = 31203984. Its totient is φ = 2971776.

The previous prime is 11144219. The next prime is 11144261. The reversal of 11144220 is 2244111.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11144220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92809 + ... + 92928.

It is an arithmetic number, because the mean of its divisors is an integer number (1300166).

Almost surely, 2^11144220 is an apocalyptic number.

11144220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11144220 is an abundant number, since it is smaller than the sum of its proper divisors (20059764).

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

11144220 is a wasteful number, since it uses less digits than its factorization.

11144220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185749 (or 185747 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 11144220 is about 3338.2959724985. The cubic root of 11144220 is about 223.3657387200.

Adding to 11144220 its reverse (2244111), we get a palindrome (13388331).

The spelling of 11144220 in words is "eleven million, one hundred forty-four thousand, two hundred twenty".