20184928 has 24 divisors (see below), whose sum is σ = 41111280. Its totient is φ = 9744000.

The previous prime is 20184919. The next prime is 20184929. The reversal of 20184928 is 82948102.

It is a junction number, because it is equal to n+sod(n) for n = 20184893 and 20184902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20184929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9948 + ... + 11803.

It is an arithmetic number, because the mean of its divisors is an integer number (1712970).

Almost surely, 2^20184928 is an apocalyptic number.

It is an amenable number.

20184928 is an abundant number, since it is smaller than the sum of its proper divisors (20926352).

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

20184928 is a wasteful number, since it uses less digits than its factorization.

20184928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21790 (or 21782 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 20184928 is about 4492.7639599694. The cubic root of 20184928 is about 272.2758159524.

It can be divided in two parts, 20184 and 928, that added together give a palindrome (21112).

The spelling of 20184928 in words is "twenty million, one hundred eighty-four thousand, nine hundred twenty-eight".