22246812 has 120 divisors (see below), whose sum is σ = 70497504. Its totient is φ = 5971968.

The previous prime is 22246801. The next prime is 22246817. The reversal of 22246812 is 21864222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22246817) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 38268 + ... + 38844.

Almost surely, 2^22246812 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 22246812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35248752).

22246812 is an abundant number, since it is smaller than the sum of its proper divisors (48250692).

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

22246812 is a wasteful number, since it uses less digits than its factorization.

22246812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617 (or 606 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 22246812 is about 4716.6526265987. The cubic root of 22246812 is about 281.2478826507.

The spelling of 22246812 in words is "twenty-two million, two hundred forty-six thousand, eight hundred twelve".