22249917 has 16 divisors (see below), whose sum is σ = 33048000. Its totient is φ = 14794992.

The previous prime is 22249907. The next prime is 22249949. The reversal of 22249917 is 71994222.

It is not a de Polignac number, because 22249917 - 2⁶ = 22249853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22249907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12934 + ... + 14552.

It is an arithmetic number, because the mean of its divisors is an integer number (2065500).

Almost surely, 2^22249917 is an apocalyptic number.

22249917 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

22249917 is a deficient number, since it is larger than the sum of its proper divisors (10798083).

22249917 is a wasteful number, since it uses less digits than its factorization.

22249917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2137 (or 2131 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 22249917 is about 4716.9817680377. The cubic root of 22249917 is about 281.2609666835.

The spelling of 22249917 in words is "twenty-two million, two hundred forty-nine thousand, nine hundred seventeen".