20080806 has 8 divisors (see below), whose sum is σ = 40161624. Its totient is φ = 6693600.

The previous prime is 20080783. The next prime is 20080811. The reversal of 20080806 is 60808002.

It is a sphenic number, since it is the product of 3 distinct primes.

20080806 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1673395 + ... + 1673406.

It is an arithmetic number, because the mean of its divisors is an integer number (5020203).

Almost surely, 2^20080806 is an apocalyptic number.

20080806 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20080806 is a wasteful number, since it uses less digits than its factorization.

20080806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3346806.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 20080806 is about 4481.1612334305. The cubic root of 20080806 is about 271.8068391424.

Adding to 20080806 its reverse (60808002), we get a palindrome (80888808).

The spelling of 20080806 in words is "twenty million, eighty thousand, eight hundred six".