22447216 has 20 divisors (see below), whose sum is σ = 47445624. Its totient is φ = 10203200.

The previous prime is 22447171. The next prime is 22447231. The reversal of 22447216 is 61274422.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63595 + ... + 63946.

Almost surely, 2^22447216 is an apocalyptic number.

It is an amenable number.

22447216 is an abundant number, since it is smaller than the sum of its proper divisors (24998408).

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

22447216 is a wasteful number, since it uses less digits than its factorization.

22447216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127560 (or 127554 counting only the distinct ones).

The product of its digits is 5376, while the sum is 28.

The square root of 22447216 is about 4737.8493011070. The cubic root of 22447216 is about 282.0898729357.

The spelling of 22447216 in words is "twenty-two million, four hundred forty-seven thousand, two hundred sixteen".