22003044 has 48 divisors (see below), whose sum is σ = 59071488. Its totient is φ = 6244128.

The previous prime is 22003043. The next prime is 22003061. The reversal of 22003044 is 44030022.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22003043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12889 + ... + 14495.

It is an arithmetic number, because the mean of its divisors is an integer number (1230656).

Almost surely, 2^22003044 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 22003044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29535744).

22003044 is an abundant number, since it is smaller than the sum of its proper divisors (37068444).

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

22003044 is a wasteful number, since it uses less digits than its factorization.

22003044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784 (or 1782 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 22003044 is about 4690.7402400900. The cubic root of 22003044 is about 280.2168558146.

Adding to 22003044 its reverse (44030022), we get a palindrome (66033066).

The spelling of 22003044 in words is "twenty-two million, three thousand, forty-four".