22428286 has 4 divisors (see below), whose sum is σ = 33642432. Its totient is φ = 11214142.

The previous prime is 22428277. The next prime is 22428349. The reversal of 22428286 is 68282422.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5607070 + ... + 5607073.

It is an arithmetic number, because the mean of its divisors is an integer number (8410608).

Almost surely, 2^22428286 is an apocalyptic number.

22428286 is a deficient number, since it is larger than the sum of its proper divisors (11214146).

22428286 is a wasteful number, since it uses less digits than its factorization.

22428286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11214145.

The product of its digits is 24576, while the sum is 34.

The square root of 22428286 is about 4735.8511378632. The cubic root of 22428286 is about 282.0105540707.

The spelling of 22428286 in words is "twenty-two million, four hundred twenty-eight thousand, two hundred eighty-six".