20500084 has 48 divisors (see below), whose sum is σ = 41803776. Its totient is φ = 8703200.

The previous prime is 20500063. The next prime is 20500091. The reversal of 20500084 is 48000502.

It is a happy number.

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, 47349 + ... + 47779.

It is an arithmetic number, because the mean of its divisors is an integer number (870912).

Almost surely, 2^20500084 is an apocalyptic number.

It is an amenable number.

20500084 is an abundant number, since it is smaller than the sum of its proper divisors (21303692).

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

20500084 is a wasteful number, since it uses less digits than its factorization.

20500084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516 (or 514 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 20500084 is about 4527.7018453074. The cubic root of 20500084 is about 273.6855575533.

Adding to 20500084 its reverse (48000502), we get a palindrome (68500586).

The spelling of 20500084 in words is "twenty million, five hundred thousand, eighty-four".