20084005 has 4 divisors (see below), whose sum is σ = 24100812. Its totient is φ = 16067200.

The previous prime is 20083981. The next prime is 20084011. The reversal of 20084005 is 50048002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50048002 = 2 ⋅25024001.

It can be written as a sum of positive squares in 2 ways, for example, as 13082689 + 7001316 = 3617^2 + 2646^2 .

It is not a de Polignac number, because 20084005 - 2⁹ = 20083493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2008396 + ... + 2008405.

It is an arithmetic number, because the mean of its divisors is an integer number (6025203).

Almost surely, 2^20084005 is an apocalyptic number.

It is an amenable number.

20084005 is a deficient number, since it is larger than the sum of its proper divisors (4016807).

20084005 is an equidigital number, since it uses as much as digits as its factorization.

20084005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4016806.

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

The square root of 20084005 is about 4481.5181579460. The cubic root of 20084005 is about 271.8212718949.

The spelling of 20084005 in words is "twenty million, eighty-four thousand, five".