20304552 has 32 divisors (see below), whose sum is σ = 50993280. Its totient is φ = 6737280.

The previous prime is 20304547. The next prime is 20304563. The reversal of 20304552 is 25540302.

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, 3777 + ... + 7407.

It is an arithmetic number, because the mean of its divisors is an integer number (1593540).

Almost surely, 2^20304552 is an apocalyptic number.

It is an amenable number.

20304552 is an abundant number, since it is smaller than the sum of its proper divisors (30688728).

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

20304552 is a wasteful number, since it uses less digits than its factorization.

20304552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3873 (or 3869 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 20304552 is about 4506.0572566269. The cubic root of 20304552 is about 272.8126288790.

Adding to 20304552 its reverse (25540302), we get a palindrome (45844854).

The spelling of 20304552 in words is "twenty million, three hundred four thousand, five hundred fifty-two".