22454212 has 36 divisors (see below), whose sum is σ = 45749340. Its totient is φ = 9602560.

The previous prime is 22454197. The next prime is 22454221. The reversal of 22454212 is 21245422.

It can be written as a sum of positive squares in 2 ways, for example, as 19945156 + 2509056 = 4466^2 + 1584^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6864 + ... + 9592.

It is an arithmetic number, because the mean of its divisors is an integer number (1270815).

Almost surely, 2^22454212 is an apocalyptic number.

22454212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22454212 is an abundant number, since it is smaller than the sum of its proper divisors (23295128).

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

22454212 is a wasteful number, since it uses less digits than its factorization.

22454212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2772 (or 2759 counting only the distinct ones).

The product of its digits is 1280, while the sum is 22.

The square root of 22454212 is about 4738.5875532694. The cubic root of 22454212 is about 282.1191756899.

Adding to 22454212 its reverse (21245422), we get a palindrome (43699634).

The spelling of 22454212 in words is "twenty-two million, four hundred fifty-four thousand, two hundred twelve".