20118910 has 48 divisors (see below), whose sum is σ = 44364240. Its totient is φ = 6531840.

The previous prime is 20118881. The next prime is 20118911. The reversal of 20118910 is 1981102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20118911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8230 + ... + 10390.

It is an arithmetic number, because the mean of its divisors is an integer number (924255).

Almost surely, 2^20118910 is an apocalyptic number.

20118910 is an abundant number, since it is smaller than the sum of its proper divisors (24245330).

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

20118910 is a wasteful number, since it uses less digits than its factorization.

20118910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2201 (or 2194 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 20118910 is about 4485.4107950109. The cubic root of 20118910 is about 271.9786513665.

The spelling of 20118910 in words is "twenty million, one hundred eighteen thousand, nine hundred ten".