20024237 has 6 divisors (see below), whose sum is σ = 20933262. Its totient is φ = 19153112.

The previous prime is 20024219. The next prime is 20024299. The reversal of 20024237 is 73242002.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10666756 + 9357481 = 3266^2 + 3059^2 .

It is not a de Polignac number, because 20024237 - 2⁸ = 20023981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20014237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18398 + ... + 19455.

It is an arithmetic number, because the mean of its divisors is an integer number (3488877).

Almost surely, 2^20024237 is an apocalyptic number.

It is an amenable number.

20024237 is a deficient number, since it is larger than the sum of its proper divisors (909025).

20024237 is an equidigital number, since it uses as much as digits as its factorization.

20024237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37899 (or 37876 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 20024237 is about 4474.8449135138. The cubic root of 20024237 is about 271.5513662962.

Adding to 20024237 its reverse (73242002), we get a palindrome (93266239).

The spelling of 20024237 in words is "twenty million, twenty-four thousand, two hundred thirty-seven".