128839032200 has 108 divisors (see below), whose sum is σ = 318421165965. Its totient is φ = 48471618560.

The previous prime is 128839032199. The next prime is 128839032233. The reversal of 128839032200 is 2230938821.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 14 ways, for example, as 38058547396 + 90780484804 = 195086^2 + 301298^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=253810.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 86294654 + ... + 86296146.

Almost surely, 2^128839032200 is an apocalyptic number.

128839032200 is a gapful number since it is divisible by the number (10) 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 128839032200

128839032200 is an abundant number, since it is smaller than the sum of its proper divisors (189582133765).

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

128839032200 is an equidigital number, since it uses as much as digits as its factorization.

128839032200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3036 (or 1517 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 128839032200 in words is "one hundred twenty-eight billion, eight hundred thirty-nine million, thirty-two thousand, two hundred".