20800284 has 48 divisors (see below), whose sum is σ = 50539776. Its totient is φ = 6652800.

The previous prime is 20800277. The next prime is 20800291. The reversal of 20800284 is 48200802.

It is an interprime number because it is at equal distance from previous prime (20800277) and next prime (20800291).

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 32649 + ... + 33279.

It is an arithmetic number, because the mean of its divisors is an integer number (1052912).

Almost surely, 2^20800284 is an apocalyptic number.

It is an amenable number.

20800284 is an abundant number, since it is smaller than the sum of its proper divisors (29739492).

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

20800284 is a wasteful number, since it uses less digits than its factorization.

20800284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746 (or 744 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 20800284 is about 4560.7328358500. The cubic root of 20800284 is about 275.0150250744.

The spelling of 20800284 in words is "twenty million, eight hundred thousand, two hundred eighty-four".