20128882628 has 48 divisors (see below), whose sum is σ = 36176952000. Its totient is φ = 9796913280.

The previous prime is 20128882621. The next prime is 20128882639. The reversal of 20128882628 is 82628882102.

It is not an unprimeable number, because it can be changed into a prime (20128882621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8424458 + ... + 8426846.

It is an arithmetic number, because the mean of its divisors is an integer number (753686500).

Almost surely, 2^20128882628 is an apocalyptic number.

It is an amenable number.

20128882628 is a deficient number, since it is larger than the sum of its proper divisors (16048069372).

20128882628 is a wasteful number, since it uses less digits than its factorization.

20128882628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2820 (or 2818 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 47.

The spelling of 20128882628 in words is "twenty billion, one hundred twenty-eight million, eight hundred eighty-two thousand, six hundred twenty-eight".