22244187 has 18 divisors (see below), whose sum is σ = 34590108. Its totient is φ = 12678288.

The previous prime is 22244149. The next prime is 22244191. The reversal of 22244187 is 78144222.

It is not a de Polignac number, because 22244187 - 2²⁰ = 21195611 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (22244147) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 56989 + ... + 57377.

Almost surely, 2^22244187 is an apocalyptic number.

22244187 is a deficient number, since it is larger than the sum of its proper divisors (12345921).

22244187 is an frugal number, since it uses more digits than its factorization.

22244187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795 (or 399 counting only the distinct ones).

The product of its digits is 7168, while the sum is 30.

The square root of 22244187 is about 4716.3743490101. The cubic root of 22244187 is about 281.2368203207.

The spelling of 22244187 in words is "twenty-two million, two hundred forty-four thousand, one hundred eighty-seven".