22287426 has 16 divisors (see below), whose sum is σ = 50942784. Its totient is φ = 6367824.

The previous prime is 22287413. The next prime is 22287443. The reversal of 22287426 is 62478222.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265285 + ... + 265368.

It is an arithmetic number, because the mean of its divisors is an integer number (3183924).

Almost surely, 2^22287426 is an apocalyptic number.

22287426 is an abundant number, since it is smaller than the sum of its proper divisors (28655358).

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

22287426 is a wasteful number, since it uses less digits than its factorization.

22287426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530665.

The product of its digits is 21504, while the sum is 33.

The square root of 22287426 is about 4720.9560472430. The cubic root of 22287426 is about 281.4189282441.

The spelling of 22287426 in words is "twenty-two million, two hundred eighty-seven thousand, four hundred twenty-six".