20005102 has 16 divisors (see below), whose sum is σ = 32774112. Its totient is φ = 9102240.

The previous prime is 20005093. The next prime is 20005129. The reversal of 20005102 is 20150002.

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 7 ways as a sum of consecutive naturals, for example, 3573 + ... + 7264.

It is an arithmetic number, because the mean of its divisors is an integer number (2048382).

Almost surely, 2^20005102 is an apocalyptic number.

20005102 is a deficient number, since it is larger than the sum of its proper divisors (12769010).

20005102 is a wasteful number, since it uses less digits than its factorization.

20005102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10923.

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 20005102 is about 4472.7063395667. The cubic root of 20005102 is about 271.4648412949.

Adding to 20005102 its reverse (20150002), we get a palindrome (40155104).

The spelling of 20005102 in words is "twenty million, five thousand, one hundred two".