22684212 has 60 divisors (see below), whose sum is σ = 60465636. Its totient is φ = 7413120.

The previous prime is 22684201. The next prime is 22684217. The reversal of 22684212 is 21248622.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18974736 + 3709476 = 4356^2 + 1926^2 .

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 (22684217) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16512 + ... + 17832.

Almost surely, 2^22684212 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 22684212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30232818).

22684212 is an abundant number, since it is smaller than the sum of its proper divisors (37781424).

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

22684212 is a wasteful number, since it uses less digits than its factorization.

22684212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390 (or 1379 counting only the distinct ones).

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

The square root of 22684212 is about 4762.7945578200. The cubic root of 22684212 is about 283.0791605977.

The spelling of 22684212 in words is "twenty-two million, six hundred eighty-four thousand, two hundred twelve".