20686882220 has 48 divisors (see below), whose sum is σ = 43765026816. Its totient is φ = 8213400000.

The previous prime is 20686882201. The next prime is 20686882309. The reversal of 20686882220 is 2228868602.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5890265 + ... + 5893775.

It is an arithmetic number, because the mean of its divisors is an integer number (911771392).

Almost surely, 2^20686882220 is an apocalyptic number.

20686882220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20686882220 is an abundant number, since it is smaller than the sum of its proper divisors (23078144596).

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

20686882220 is a wasteful number, since it uses less digits than its factorization.

20686882220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5622 (or 5620 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 44.

The spelling of 20686882220 in words is "twenty billion, six hundred eighty-six million, eight hundred eighty-two thousand, two hundred twenty".