20305282 has 4 divisors (see below), whose sum is σ = 30457926. Its totient is φ = 10152640.

The previous prime is 20305277. The next prime is 20305321. The reversal of 20305282 is 28250302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15202201 + 5103081 = 3899^2 + 2259^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5076319 + ... + 5076322.

Almost surely, 2^20305282 is an apocalyptic number.

20305282 is a deficient number, since it is larger than the sum of its proper divisors (10152644).

20305282 is a wasteful number, since it uses less digits than its factorization.

20305282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10152643.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 20305282 is about 4506.1382579766. The cubic root of 20305282 is about 272.8158982745.

Adding to 20305282 its reverse (28250302), we get a palindrome (48555584).

The spelling of 20305282 in words is "twenty million, three hundred five thousand, two hundred eighty-two".