11162220 has 24 divisors (see below), whose sum is σ = 31254384. Its totient is φ = 2976576.

The previous prime is 11162191. The next prime is 11162233. The reversal of 11162220 is 2226111.

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 11162220.

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 7 ways as a sum of consecutive naturals, for example, 92959 + ... + 93078.

It is an arithmetic number, because the mean of its divisors is an integer number (1302266).

Almost surely, 2^11162220 is an apocalyptic number.

11162220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11162220 is an abundant number, since it is smaller than the sum of its proper divisors (20092164).

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

11162220 is a wasteful number, since it uses less digits than its factorization.

11162220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186049 (or 186047 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 11162220 is about 3340.9908709842. The cubic root of 11162220 is about 223.4859331817.

Adding to 11162220 its reverse (2226111), we get a palindrome (13388331).

The spelling of 11162220 in words is "eleven million, one hundred sixty-two thousand, two hundred twenty".