20584328 has 16 divisors (see below), whose sum is σ = 39229260. Its totient is φ = 10123200.

The previous prime is 20584327. The next prime is 20584349. The reversal of 20584328 is 82348502.

It can be written as a sum of positive squares in 2 ways, for example, as 14122564 + 6461764 = 3758^2 + 2542^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20584294 and 20584303.

It is not an unprimeable number, because it can be changed into a prime (20584327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20603 + ... + 21578.

Almost surely, 2^20584328 is an apocalyptic number.

It is an amenable number.

20584328 is a deficient number, since it is larger than the sum of its proper divisors (18644932).

20584328 is a wasteful number, since it uses less digits than its factorization.

20584328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42248 (or 42244 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 20584328 is about 4536.9954815935. The cubic root of 20584328 is about 274.0599439062.

The spelling of 20584328 in words is "twenty million, five hundred eighty-four thousand, three hundred twenty-eight".