22220574 has 8 divisors (see below), whose sum is σ = 44441160. Its totient is φ = 7406856.

The previous prime is 22220537. The next prime is 22220603. The reversal of 22220574 is 47502222.

It is a sphenic number, since it is the product of 3 distinct primes.

22220574 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1851709 + ... + 1851720.

It is an arithmetic number, because the mean of its divisors is an integer number (5555145).

Almost surely, 2^22220574 is an apocalyptic number.

22220574 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22220574 is a wasteful number, since it uses less digits than its factorization.

22220574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3703434.

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 22220574 is about 4713.8703843021. The cubic root of 22220574 is about 281.1372707731.

Adding to 22220574 its reverse (47502222), we get a palindrome (69722796).

The spelling of 22220574 in words is "twenty-two million, two hundred twenty thousand, five hundred seventy-four".