20208084860 has 24 divisors (see below), whose sum is σ = 43237678176. Its totient is φ = 7930719680.

The previous prime is 20208084859. The next prime is 20208084881. The reversal of 20208084860 is 6848080202.

It is a super-2 number, since 2×20208084860² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 9531056 + ... + 9533175.

It is an arithmetic number, because the mean of its divisors is an integer number (1801569924).

Almost surely, 2^20208084860 is an apocalyptic number.

20208084860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20208084860 is an abundant number, since it is smaller than the sum of its proper divisors (23029593316).

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

20208084860 is a wasteful number, since it uses less digits than its factorization.

20208084860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19064293 (or 19064291 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 38.

The spelling of 20208084860 in words is "twenty billion, two hundred eight million, eighty-four thousand, eight hundred sixty".