2185424 has 20 divisors (see below), whose sum is σ = 4269444. Its totient is φ = 1083648.

The previous prime is 2185409. The next prime is 2185427. The reversal of 2185424 is 4245812.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1607824 + 577600 = 1268^2 + 760^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2185393 and 2185402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2185427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1694 + ... + 2690.

2^2185424 is an apocalyptic number.

It is an amenable number.

2185424 is a deficient number, since it is larger than the sum of its proper divisors (2084020).

2185424 is a wasteful number, since it uses less digits than its factorization.

2185424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142 (or 1136 counting only the distinct ones).

The product of its digits is 2560, while the sum is 26.

The square root of 2185424 is about 1478.3179630918. The cubic root of 2185424 is about 129.7712743382.

The spelling of 2185424 in words is "two million, one hundred eighty-five thousand, four hundred twenty-four".