1993424 has 20 divisors (see below), whose sum is σ = 3987840. Its totient is φ = 964320.

The previous prime is 1993417. The next prime is 1993441. The reversal of 1993424 is 4243991.

It is a happy number.

1993424 is an admirable number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1514 + ... + 2505.

It is an arithmetic number, because the mean of its divisors is an integer number (199392).

2^1993424 is an apocalyptic number.

It is an amenable number.

1993424 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1993424 is a wasteful number, since it uses less digits than its factorization.

1993424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4058 (or 4052 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

The square root of 1993424 is about 1411.8866810052. The cubic root of 1993424 is about 125.8538660216.

The spelling of 1993424 in words is "one million, nine hundred ninety-three thousand, four hundred twenty-four".