2173424 has 40 divisors (see below), whose sum is σ = 4700592. Its totient is φ = 965120.

The previous prime is 2173411. The next prime is 2173447. The reversal of 2173424 is 4243712.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2173424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9212 + ... + 9444.

2^2173424 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 2173424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2350296).

2173424 is an abundant number, since it is smaller than the sum of its proper divisors (2527168).

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

2173424 is a wasteful number, since it uses less digits than its factorization.

2173424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305 (or 299 counting only the distinct ones).

The product of its digits is 1344, while the sum is 23.

The square root of 2173424 is about 1474.2537095086. The cubic root of 2173424 is about 129.5333168105.

The spelling of 2173424 in words is "two million, one hundred seventy-three thousand, four hundred twenty-four".