20052006 has 16 divisors (see below), whose sum is σ = 43189104. Its totient is φ = 6169824.

The previous prime is 20051989. The next prime is 20052013. The reversal of 20052006 is 60025002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128461 + ... + 128616.

It is an arithmetic number, because the mean of its divisors is an integer number (2699319).

Almost surely, 2^20052006 is an apocalyptic number.

20052006 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20052006 is an abundant number, since it is smaller than the sum of its proper divisors (23137098).

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

20052006 is a wasteful number, since it uses less digits than its factorization.

20052006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257095.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 20052006 is about 4477.9466276408. The cubic root of 20052006 is about 271.6768346946.

Adding to 20052006 its reverse (60025002), we get a palindrome (80077008).

The spelling of 20052006 in words is "twenty million, fifty-two thousand, six".