20018108 has 24 divisors (see below), whose sum is σ = 38330544. Its totient is φ = 9072000.

The previous prime is 20018101. The next prime is 20018113. The reversal of 20018108 is 80181002.

It is a self number, because there is not a number n which added to its sum of digits gives 20018108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20018101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26066 + ... + 26822.

It is an arithmetic number, because the mean of its divisors is an integer number (1597106).

Almost surely, 2^20018108 is an apocalyptic number.

It is an amenable number.

20018108 is a deficient number, since it is larger than the sum of its proper divisors (18312436).

20018108 is a wasteful number, since it uses less digits than its factorization.

20018108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373 (or 1371 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 20018108 is about 4474.1600329000. The cubic root of 20018108 is about 271.5236580718.

The spelling of 20018108 in words is "twenty million, eighteen thousand, one hundred eight".