22713216 has 32 divisors (see below), whose sum is σ = 60333000. Its totient is φ = 7570944.

The previous prime is 22713209. The next prime is 22713217. The reversal of 22713216 is 61231722.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22713217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29191 + ... + 29958.

Almost surely, 2^22713216 is an apocalyptic number.

It is an amenable number.

22713216 is an abundant number, since it is smaller than the sum of its proper divisors (37619784).

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

22713216 is an equidigital number, since it uses as much as digits as its factorization.

22713216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59166 (or 59154 counting only the distinct ones).

The product of its digits is 1008, while the sum is 24.

The square root of 22713216 is about 4765.8384362041. The cubic root of 22713216 is about 283.1997574131.

Adding to 22713216 its reverse (61231722), we get a palindrome (83944938).

The spelling of 22713216 in words is "twenty-two million, seven hundred thirteen thousand, two hundred sixteen".