22193428 has 12 divisors (see below), whose sum is σ = 39077920. Its totient is φ = 11028312.

The previous prime is 22193419. The next prime is 22193441. The reversal of 22193428 is 82439122.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 22193428.

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, 16368 + ... + 17671.

Almost surely, 2^22193428 is an apocalyptic number.

It is an amenable number.

22193428 is a deficient number, since it is larger than the sum of its proper divisors (16884492).

22193428 is a wasteful number, since it uses less digits than its factorization.

22193428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34206 (or 34204 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 22193428 is about 4710.9901294738. The cubic root of 22193428 is about 281.0227393443.

The spelling of 22193428 in words is "twenty-two million, one hundred ninety-three thousand, four hundred twenty-eight".