22212328 has 8 divisors (see below), whose sum is σ = 41648130. Its totient is φ = 11106160.

The previous prime is 22212301. The next prime is 22212329. The reversal of 22212328 is 82321222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20629764 + 1582564 = 4542^2 + 1258^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 22212299 and 22212308.

It is not an unprimeable number, because it can be changed into a prime (22212329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1388263 + ... + 1388278.

Almost surely, 2^22212328 is an apocalyptic number.

It is an amenable number.

22212328 is a deficient number, since it is larger than the sum of its proper divisors (19435802).

22212328 is a wasteful number, since it uses less digits than its factorization.

22212328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2776547 (or 2776543 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 22212328 is about 4712.9956503269. The cubic root of 22212328 is about 281.1024900220.

The spelling of 22212328 in words is "twenty-two million, two hundred twelve thousand, three hundred twenty-eight".