20800102 has 16 divisors (see below), whose sum is σ = 31651200. Its totient is φ = 10251072.

The previous prime is 20800097. The next prime is 20800103. The reversal of 20800102 is 20100802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20800103) by changing a digit.

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, 66298 + ... + 66610.

It is an arithmetic number, because the mean of its divisors is an integer number (1978200).

Almost surely, 2^20800102 is an apocalyptic number.

20800102 is a deficient number, since it is larger than the sum of its proper divisors (10851098).

20800102 is a wasteful number, since it uses less digits than its factorization.

20800102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 20800102 is about 4560.7128828726. The cubic root of 20800102 is about 275.0142229558.

Adding to 20800102 its reverse (20100802), we get a palindrome (40900904).

It can be divided in two parts, 20800 and 102, that added together give a palindrome (20902).

The spelling of 20800102 in words is "twenty million, eight hundred thousand, one hundred two".