22304212 has 18 divisors (see below), whose sum is σ = 45405402. Its totient is φ = 9558864.

The previous prime is 22304207. The next prime is 22304251. The reversal of 22304212 is 21240322.

It can be written as a sum of positive squares in only one way, i.e., 16370116 + 5934096 = 4046^2 + 2436^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56703 + ... + 57094.

Almost surely, 2^22304212 is an apocalyptic number.

It is an amenable number.

22304212 is an abundant number, since it is smaller than the sum of its proper divisors (23101190).

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

22304212 is a wasteful number, since it uses less digits than its factorization.

22304212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113815 (or 113806 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 22304212 is about 4722.7335304885. The cubic root of 22304212 is about 281.4895616837.

Adding to 22304212 its reverse (21240322), we get a palindrome (43544534).

The spelling of 22304212 in words is "twenty-two million, three hundred four thousand, two hundred twelve".