20020724 has 12 divisors (see below), whose sum is σ = 35067648. Its totient is φ = 10001400.

The previous prime is 20020723. The next prime is 20020753. The reversal of 20020724 is 42702002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020723) 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, 7259 + ... + 9629.

It is an arithmetic number, because the mean of its divisors is an integer number (2922304).

Almost surely, 2^20020724 is an apocalyptic number.

It is an amenable number.

20020724 is a deficient number, since it is larger than the sum of its proper divisors (15046924).

20020724 is a wasteful number, since it uses less digits than its factorization.

20020724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4486 (or 4484 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 20020724 is about 4474.4523687263. The cubic root of 20020724 is about 271.5354852793.

Adding to 20020724 its reverse (42702002), we get a palindrome (62722726).

The spelling of 20020724 in words is "twenty million, twenty thousand, seven hundred twenty-four".