20019982528 has 336 divisors, whose sum is σ = 52260398400. Its totient is φ = 7559516160.

The previous prime is 20019982517. The next prime is 20019982571. The reversal of 20019982528 is 82528991002.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 274246300 + ... + 274246372.

It is an arithmetic number, because the mean of its divisors is an integer number (155536900).

Almost surely, 2^20019982528 is an apocalyptic number.

20019982528 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20019982528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26130199200).

20019982528 is an abundant number, since it is smaller than the sum of its proper divisors (32240415872).

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

20019982528 is an equidigital number, since it uses as much as digits as its factorization.

20019982528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 46.

The spelling of 20019982528 in words is "twenty billion, nineteen million, nine hundred eighty-two thousand, five hundred twenty-eight".