22259828 has 6 divisors (see below), whose sum is σ = 38954706. Its totient is φ = 11129912.

The previous prime is 22259821. The next prime is 22259833. The reversal of 22259828 is 82895222.

It can be written as a sum of positive squares in only one way, i.e., 12096484 + 10163344 = 3478^2 + 3188^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22259791 and 22259800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22259821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2782475 + ... + 2782482.

It is an arithmetic number, because the mean of its divisors is an integer number (6492451).

Almost surely, 2^22259828 is an apocalyptic number.

It is an amenable number.

22259828 is a deficient number, since it is larger than the sum of its proper divisors (16694878).

22259828 is a wasteful number, since it uses less digits than its factorization.

22259828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5564961 (or 5564959 counting only the distinct ones).

The product of its digits is 46080, while the sum is 38.

The square root of 22259828 is about 4718.0322169311. The cubic root of 22259828 is about 281.3027220998.

The spelling of 22259828 in words is "twenty-two million, two hundred fifty-nine thousand, eight hundred twenty-eight".