22191268 has 48 divisors (see below), whose sum is σ = 44662464. Its totient is φ = 9555840.

The previous prime is 22191223. The next prime is 22191287. The reversal of 22191268 is 86219122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69846 + ... + 70162.

It is an arithmetic number, because the mean of its divisors is an integer number (930468).

Almost surely, 2^22191268 is an apocalyptic number.

It is an amenable number.

22191268 is an abundant number, since it is smaller than the sum of its proper divisors (22471196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22191268 is a wasteful number, since it uses less digits than its factorization.

22191268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412 (or 410 counting only the distinct ones).

The product of its digits is 3456, while the sum is 31.

The square root of 22191268 is about 4710.7608727253. The cubic root of 22191268 is about 281.0136220985.

The spelling of 22191268 in words is "twenty-two million, one hundred ninety-one thousand, two hundred sixty-eight".