20185008 has 20 divisors (see below), whose sum is σ = 52144728. Its totient is φ = 6728320.

The previous prime is 20185003. The next prime is 20185031. The reversal of 20185008 is 80058102.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (20185003) 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, 210213 + ... + 210308.

Almost surely, 2^20185008 is an apocalyptic number.

It is an amenable number.

20185008 is an abundant number, since it is smaller than the sum of its proper divisors (31959720).

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

20185008 is a wasteful number, since it uses less digits than its factorization.

20185008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420532 (or 420526 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 20185008 is about 4492.7728631659. The cubic root of 20185008 is about 272.2761756604.

The spelling of 20185008 in words is "twenty million, one hundred eighty-five thousand, eight".