22671216 has 60 divisors (see below), whose sum is σ = 63777168. Its totient is φ = 7517952.

The previous prime is 22671211. The next prime is 22671239. The reversal of 22671216 is 61217622.

It is a self number, because there is not a number n which added to its sum of digits gives 22671216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22671211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44821 + ... + 45323.

Almost surely, 2^22671216 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 22671216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31888584).

22671216 is an abundant number, since it is smaller than the sum of its proper divisors (41105952).

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

22671216 is a wasteful number, since it uses less digits than its factorization.

22671216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830 (or 821 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 22671216 is about 4761.4300372892. The cubic root of 22671216 is about 283.0250906929.

Adding to 22671216 its reverse (61217622), we get a palindrome (83888838).

The spelling of 22671216 in words is "twenty-two million, six hundred seventy-one thousand, two hundred sixteen".