11220444 has 30 divisors (see below), whose sum is σ = 29333304. Its totient is φ = 3740040.

The previous prime is 11220427. The next prime is 11220457. The reversal of 11220444 is 44402211.

11220444 is a `hidden beast` number, since 1 + 1 + 220 + 444 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 16992 + ... + 17639.

Almost surely, 2^11220444 is an apocalyptic number.

It is an amenable number.

11220444 is an abundant number, since it is smaller than the sum of its proper divisors (18112860).

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

11220444 is a wasteful number, since it uses less digits than its factorization.

11220444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34647 (or 34636 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 11220444 is about 3349.6931202724. The cubic root of 11220444 is about 223.8738394593.

Adding to 11220444 its reverse (44402211), we get a palindrome (55622655).

It can be divided in two parts, 11220 and 444, that added together give a square (11664 = 108²).

The spelling of 11220444 in words is "eleven million, two hundred twenty thousand, four hundred forty-four".