20304252 has 36 divisors (see below), whose sum is σ = 51740416. Its totient is φ = 6713280.

The previous prime is 20304227. The next prime is 20304253. The reversal of 20304252 is 25240302.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20304253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2352 + ... + 6792.

Almost surely, 2^20304252 is an apocalyptic number.

It is an amenable number.

20304252 is an abundant number, since it is smaller than the sum of its proper divisors (31436164).

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

20304252 is a wasteful number, since it uses less digits than its factorization.

20304252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4578 (or 4573 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 20304252 is about 4506.0239679789. The cubic root of 20304252 is about 272.8112852691.

Adding to 20304252 its reverse (25240302), we get a palindrome (45544554).

The spelling of 20304252 in words is "twenty million, three hundred four thousand, two hundred fifty-two".