22428293 has 4 divisors (see below), whose sum is σ = 22447500. Its totient is φ = 22409088.

The previous prime is 22428277. The next prime is 22428349. The reversal of 22428293 is 39282422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18258529 + 4169764 = 4273^2 + 2042^2 .

It is a cyclic number.

It is not a de Polignac number, because 22428293 - 2⁴ = 22428277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22428233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7730 + ... + 10227.

It is an arithmetic number, because the mean of its divisors is an integer number (5611875).

Almost surely, 2^22428293 is an apocalyptic number.

It is an amenable number.

22428293 is a deficient number, since it is larger than the sum of its proper divisors (19207).

22428293 is a wasteful number, since it uses less digits than its factorization.

22428293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19206.

The product of its digits is 13824, while the sum is 32.

The square root of 22428293 is about 4735.8518769066. The cubic root of 22428293 is about 282.0105834098.

The spelling of 22428293 in words is "twenty-two million, four hundred twenty-eight thousand, two hundred ninety-three".