20084180 has 12 divisors (see below), whose sum is σ = 42176820. Its totient is φ = 8033664.

The previous prime is 20084173. The next prime is 20084201. The reversal of 20084180 is 8148002.

It can be written as a sum of positive squares in 2 ways, for example, as 2208196 + 17875984 = 1486^2 + 4228^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 502085 + ... + 502124.

It is an arithmetic number, because the mean of its divisors is an integer number (3514735).

Almost surely, 2^20084180 is an apocalyptic number.

20084180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20084180 is an abundant number, since it is smaller than the sum of its proper divisors (22092640).

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

20084180 is a wasteful number, since it uses less digits than its factorization.

20084180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004218 (or 1004216 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 20084180 is about 4481.5376825371. The cubic root of 20084180 is about 271.8220613886.

The spelling of 20084180 in words is "twenty million, eighty-four thousand, one hundred eighty".