22022428 has 12 divisors (see below), whose sum is σ = 38578680. Its totient is φ = 10999952.

The previous prime is 22022417. The next prime is 22022447. The reversal of 22022428 is 82422022.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22022399 and 22022408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2850 + ... + 7222.

It is an arithmetic number, because the mean of its divisors is an integer number (3214890).

Almost surely, 2^22022428 is an apocalyptic number.

It is an amenable number.

22022428 is a deficient number, since it is larger than the sum of its proper divisors (16556252).

22022428 is a wasteful number, since it uses less digits than its factorization.

22022428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5636 (or 5634 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 22022428 is about 4692.8059836307. The cubic root of 22022428 is about 280.2991191180.

The spelling of 22022428 in words is "twenty-two million, twenty-two thousand, four hundred twenty-eight".