22891224 has 32 divisors (see below), whose sum is σ = 57823920. Its totient is φ = 7550976.

The previous prime is 22891223. The next prime is 22891241. The reversal of 22891224 is 42219822.

It is a junction number, because it is equal to n+sod(n) for n = 22891191 and 22891200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22891223) 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 7 ways as a sum of consecutive naturals, for example, 2589 + ... + 7244.

Almost surely, 2^22891224 is an apocalyptic number.

22891224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22891224 is an abundant number, since it is smaller than the sum of its proper divisors (34932696).

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

22891224 is a wasteful number, since it uses less digits than its factorization.

22891224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9939 (or 9935 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 22891224 is about 4784.4774009290. The cubic root of 22891224 is about 283.9376640281.

The spelling of 22891224 in words is "twenty-two million, eight hundred ninety-one thousand, two hundred twenty-four".