22003572 has 12 divisors (see below), whose sum is σ = 51341696. Its totient is φ = 7334520.

The previous prime is 22003529. The next prime is 22003589. The reversal of 22003572 is 27530022.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 916804 + ... + 916827.

Almost surely, 2^22003572 is an apocalyptic number.

It is an amenable number.

22003572 is an abundant number, since it is smaller than the sum of its proper divisors (29338124).

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

22003572 is a wasteful number, since it uses less digits than its factorization.

22003572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833638 (or 1833636 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 22003572 is about 4690.7965208480. The cubic root of 22003572 is about 280.2190972214.

Adding to 22003572 its reverse (27530022), we get a palindrome (49533594).

The spelling of 22003572 in words is "twenty-two million, three thousand, five hundred seventy-two".