20424252 has 24 divisors (see below), whose sum is σ = 47748736. Its totient is φ = 6794928.

The previous prime is 20424247. The next prime is 20424263. The reversal of 20424252 is 25242402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6393 + ... + 9039.

Almost surely, 2^20424252 is an apocalyptic number.

It is an amenable number.

20424252 is an abundant number, since it is smaller than the sum of its proper divisors (27324484).

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

20424252 is a wasteful number, since it uses less digits than its factorization.

20424252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3297 (or 3295 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 20424252 is about 4519.3198603330. The cubic root of 20424252 is about 273.3476765558.

Adding to 20424252 its reverse (25242402), we get a palindrome (45666654).

The spelling of 20424252 in words is "twenty million, four hundred twenty-four thousand, two hundred fifty-two".