20181102 has 16 divisors (see below), whose sum is σ = 41347152. Its totient is φ = 6562880.

The previous prime is 20181079. The next prime is 20181121. The reversal of 20181102 is 20118102.

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, 40773 + ... + 41264.

It is an arithmetic number, because the mean of its divisors is an integer number (2584197).

Almost surely, 2^20181102 is an apocalyptic number.

20181102 is an abundant number, since it is smaller than the sum of its proper divisors (21166050).

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

20181102 is a wasteful number, since it uses less digits than its factorization.

20181102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82083.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 20181102 is about 4492.3381439958. The cubic root of 20181102 is about 272.2586118105.

Adding to 20181102 its reverse (20118102), we get a palindrome (40299204).

The spelling of 20181102 in words is "twenty million, one hundred eighty-one thousand, one hundred two".