22220576 has 96 divisors (see below), whose sum is σ = 55157760. Its totient is φ = 8591616.

The previous prime is 22220537. The next prime is 22220603. The reversal of 22220576 is 67502222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97775 + ... + 98001.

It is an arithmetic number, because the mean of its divisors is an integer number (574560).

Almost surely, 2^22220576 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 22220576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27578880).

22220576 is an abundant number, since it is smaller than the sum of its proper divisors (32937184).

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

22220576 is a wasteful number, since it uses less digits than its factorization.

22220576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 22220576 is about 4713.8705964420. The cubic root of 22220576 is about 281.1372792078.

Adding to 22220576 its reverse (67502222), we get a palindrome (89722798).

The spelling of 22220576 in words is "twenty-two million, two hundred twenty thousand, five hundred seventy-six".