22689216 has 84 divisors (see below), whose sum is σ = 70966584. Its totient is φ = 6873600.

The previous prime is 22689209. The next prime is 22689221. The reversal of 22689216 is 61298622.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4546 + ... + 8126.

Almost surely, 2^22689216 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 22689216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35483292).

22689216 is an abundant number, since it is smaller than the sum of its proper divisors (48277368).

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

22689216 is a wasteful number, since it uses less digits than its factorization.

22689216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3610 (or 3597 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 22689216 is about 4763.3198506924. The cubic root of 22689216 is about 283.0999742510.

The spelling of 22689216 in words is "twenty-two million, six hundred eighty-nine thousand, two hundred sixteen".