22445216 has 12 divisors (see below), whose sum is σ = 44189082. Its totient is φ = 11222592.

The previous prime is 22445197. The next prime is 22445221. The reversal of 22445216 is 61254422.

It can be written as a sum of positive squares in only one way, i.e., 22090000 + 355216 = 4700^2 + 596^2 .

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 350675 + ... + 350738.

Almost surely, 2^22445216 is an apocalyptic number.

It is an amenable number.

22445216 is a deficient number, since it is larger than the sum of its proper divisors (21743866).

22445216 is an equidigital number, since it uses as much as digits as its factorization.

22445216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701423 (or 701415 counting only the distinct ones).

The product of its digits is 3840, while the sum is 26.

The square root of 22445216 is about 4737.6382301733. The cubic root of 22445216 is about 282.0814948143.

Adding to 22445216 its reverse (61254422), we get a palindrome (83699638).

The spelling of 22445216 in words is "twenty-two million, four hundred forty-five thousand, two hundred sixteen".