20024993 has 8 divisors (see below), whose sum is σ = 21806400. Its totient is φ = 18316368.

The previous prime is 20024989. The next prime is 20025001. The reversal of 20024993 is 39942002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20024993 - 2² = 20024989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20027993) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 17621 + ... + 18722.

It is an arithmetic number, because the mean of its divisors is an integer number (2725800).

Almost surely, 2^20024993 is an apocalyptic number.

It is an amenable number.

20024993 is a deficient number, since it is larger than the sum of its proper divisors (1781407).

20024993 is a wasteful number, since it uses less digits than its factorization.

20024993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36391.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 20024993 is about 4474.9293849177. The cubic root of 20024993 is about 271.5547836591.

Adding to 20024993 its reverse (39942002), we get a palindrome (59966995).

The spelling of 20024993 in words is "twenty million, twenty-four thousand, nine hundred ninety-three".