20011108 has 24 divisors (see below), whose sum is σ = 39933432. Its totient is φ = 8692224.

The previous prime is 20011099. The next prime is 20011139. The reversal of 20011108 is 80111002.

It can be written as a sum of positive squares in 4 ways, for example, as 984064 + 19027044 = 992^2 + 4362^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

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, 10435 + ... + 12202.

It is an arithmetic number, because the mean of its divisors is an integer number (1663893).

Almost surely, 2^20011108 is an apocalyptic number.

It is an amenable number.

20011108 is a deficient number, since it is larger than the sum of its proper divisors (19922324).

20011108 is a wasteful number, since it uses less digits than its factorization.

20011108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22671 (or 22669 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 20011108 is about 4473.3776947626. The cubic root of 20011108 is about 271.4920052770.

The spelling of 20011108 in words is "twenty million, eleven thousand, one hundred eight".