22190928 has 20 divisors (see below), whose sum is σ = 57326688. Its totient is φ = 7396960.

The previous prime is 22190923. The next prime is 22190957. The reversal of 22190928 is 82909122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22190921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231108 + ... + 231203.

Almost surely, 2^22190928 is an apocalyptic number.

It is an amenable number.

22190928 is an abundant number, since it is smaller than the sum of its proper divisors (35135760).

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

22190928 is a wasteful number, since it uses less digits than its factorization.

22190928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462322 (or 462316 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 22190928 is about 4710.7247849986. The cubic root of 22190928 is about 281.0121869226.

The spelling of 22190928 in words is "twenty-two million, one hundred ninety thousand, nine hundred twenty-eight".