20859108 has 24 divisors (see below), whose sum is σ = 49220640. Its totient is φ = 6874560.

The previous prime is 20859103. The next prime is 20859121. The reversal of 20859108 is 80195802.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20859103) 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, 8698 + ... + 10833.

It is an arithmetic number, because the mean of its divisors is an integer number (2050860).

Almost surely, 2^20859108 is an apocalyptic number.

It is an amenable number.

20859108 is an abundant number, since it is smaller than the sum of its proper divisors (28361532).

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

20859108 is a wasteful number, since it uses less digits than its factorization.

20859108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19627 (or 19625 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 20859108 is about 4567.1772463963. The cubic root of 20859108 is about 275.2740320759.

The spelling of 20859108 in words is "twenty million, eight hundred fifty-nine thousand, one hundred eight".