20204482688 has 48 divisors (see below), whose sum is σ = 43585576650. Its totient is φ = 9325135872.

The previous prime is 20204482679. The next prime is 20204482699. The reversal of 20204482688 is 88628440202.

It can be written as a sum of positive squares in 3 ways, for example, as 4889925184 + 15314557504 = 69928^2 + 123752^2 .

It is a super-2 number, since 2×20204482688² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 445373 + ... + 488636.

Almost surely, 2^20204482688 is an apocalyptic number.

It is an amenable number.

20204482688 is an abundant number, since it is smaller than the sum of its proper divisors (23381093962).

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

20204482688 is an equidigital number, since it uses as much as digits as its factorization.

20204482688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934049 (or 934024 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 44.

The spelling of 20204482688 in words is "twenty billion, two hundred four million, four hundred eighty-two thousand, six hundred eighty-eight".