22173424 has 80 divisors (see below), whose sum is σ = 53760448. Its totient is φ = 8626176.

The previous prime is 22173421. The next prime is 22173427. The reversal of 22173424 is 42437122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22173421) and next prime (22173427).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22173421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141154 + ... + 141310.

Almost surely, 2^22173424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22173424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26880224).

22173424 is an abundant number, since it is smaller than the sum of its proper divisors (31587024).

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

22173424 is a wasteful number, since it uses less digits than its factorization.

22173424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282 (or 276 counting only the distinct ones).

The product of its digits is 2688, while the sum is 25.

The square root of 22173424 is about 4708.8665302809. The cubic root of 22173424 is about 280.9382808772.

The spelling of 22173424 in words is "twenty-two million, one hundred seventy-three thousand, four hundred twenty-four".