206820002 has 16 divisors (see below), whose sum is σ = 324412992. Its totient is φ = 98701680.

The previous prime is 206819999. The next prime is 206820013. The reversal of 206820002 is 200028602.

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 7 ways as a sum of consecutive naturals, for example, 18008 + ... + 27164.

It is an arithmetic number, because the mean of its divisors is an integer number (20275812).

Almost surely, 2^206820002 is an apocalyptic number.

206820002 is a deficient number, since it is larger than the sum of its proper divisors (117592990).

206820002 is a wasteful number, since it uses less digits than its factorization.

206820002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9673.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 206820002 is about 14381.2378465833. The cubic root of 206820002 is about 591.3766589151.

Adding to 206820002 its reverse (200028602), we get a palindrome (406848604).

The spelling of 206820002 in words is "two hundred six million, eight hundred twenty thousand, two".