20826284 has 6 divisors (see below), whose sum is σ = 36446004. Its totient is φ = 10413140.

The previous prime is 20826271. The next prime is 20826331. The reversal of 20826284 is 48262802.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20826284.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2603282 + ... + 2603289.

It is an arithmetic number, because the mean of its divisors is an integer number (6074334).

Almost surely, 2^20826284 is an apocalyptic number.

It is an amenable number.

20826284 is a deficient number, since it is larger than the sum of its proper divisors (15619720).

20826284 is a wasteful number, since it uses less digits than its factorization.

20826284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5206575 (or 5206573 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 20826284 is about 4563.5823647656. The cubic root of 20826284 is about 275.1295653924.

The spelling of 20826284 in words is "twenty million, eight hundred twenty-six thousand, two hundred eighty-four".