20052784 has 20 divisors (see below), whose sum is σ = 40106560. Its totient is φ = 9702720.

The previous prime is 20052751. The next prime is 20052787. The reversal of 20052784 is 48725002.

20052784 is an admirable number.

It is a super-2 number, since 2×20052784² = 804228292301312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20052787) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 19719 + ... + 20710.

It is an arithmetic number, because the mean of its divisors is an integer number (2005328).

Almost surely, 2^20052784 is an apocalyptic number.

It is an amenable number.

20052784 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20052784 is a wasteful number, since it uses less digits than its factorization.

20052784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40468 (or 40462 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 20052784 is about 4478.0334969716. The cubic root of 20052784 is about 271.6803482556.

Adding to 20052784 its reverse (48725002), we get a palindrome (68777786).

The spelling of 20052784 in words is "twenty million, fifty-two thousand, seven hundred eighty-four".