22249858 has 4 divisors (see below), whose sum is σ = 33374790. Its totient is φ = 11124928.

The previous prime is 22249853. The next prime is 22249891. The reversal of 22249858 is 85894222.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 11471769 + 10778089 = 3387^2 + 3283^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22249858.

It is not an unprimeable number, because it can be changed into a prime (22249853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5562463 + ... + 5562466.

Almost surely, 2^22249858 is an apocalyptic number.

22249858 is a deficient number, since it is larger than the sum of its proper divisors (11124932).

22249858 is a wasteful number, since it uses less digits than its factorization.

22249858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11124931.

The product of its digits is 92160, while the sum is 40.

The square root of 22249858 is about 4716.9755140344. The cubic root of 22249858 is about 281.2607180771.

The spelling of 22249858 in words is "twenty-two million, two hundred forty-nine thousand, eight hundred fifty-eight".