128028274704 has 160 divisors (see below), whose sum is σ = 405847178880. Its totient is φ = 38796330240.

The previous prime is 128028274687. The next prime is 128028274709. The reversal of 128028274704 is 407472820821.

It is a self number, because there is not a number n which added to its sum of digits gives 128028274704.

It is not an unprimeable number, because it can be changed into a prime (128028274709) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 218604 + ... + 551220.

It is an arithmetic number, because the mean of its divisors is an integer number (2536544868).

Almost surely, 2^128028274704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128028274704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202923589440).

128028274704 is an abundant number, since it is smaller than the sum of its proper divisors (277818904176).

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

128028274704 is an equidigital number, since it uses as much as digits as its factorization.

128028274704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332657 (or 332633 counting only the distinct ones).

The product of its (nonzero) digits is 401408, while the sum is 45.

The spelling of 128028274704 in words is "one hundred twenty-eight billion, twenty-eight million, two hundred seventy-four thousand, seven hundred four".