20102118 has 8 divisors (see below), whose sum is σ = 40204248. Its totient is φ = 6700704.

The previous prime is 20102111. The next prime is 20102119. The reversal of 20102118 is 81120102.

It is a sphenic number, since it is the product of 3 distinct primes.

20102118 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 20102097 and 20102106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1675171 + ... + 1675182.

It is an arithmetic number, because the mean of its divisors is an integer number (5025531).

Almost surely, 2^20102118 is an apocalyptic number.

20102118 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20102118 is a wasteful number, since it uses less digits than its factorization.

20102118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3350358.

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

The square root of 20102118 is about 4483.5385578804. The cubic root of 20102118 is about 271.9029624298.

The spelling of 20102118 in words is "twenty million, one hundred two thousand, one hundred eighteen".