128527872 has 80 divisors (see below), whose sum is σ = 373583232. Its totient is φ = 38942720.

The previous prime is 128527849. The next prime is 128527877. The reversal of 128527872 is 278725821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128527877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13093 + ... + 20699.

Almost surely, 2^128527872 is an apocalyptic number.

128527872 is a gapful number since it is divisible by the number (12) 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 128527872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186791616).

128527872 is an abundant number, since it is smaller than the sum of its proper divisors (245055360).

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

128527872 is an equidigital number, since it uses as much as digits as its factorization.

128527872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7639 (or 7623 counting only the distinct ones).

The product of its digits is 125440, while the sum is 42.

The square root of 128527872 is about 11337.0133633158. The cubic root of 128527872 is about 504.6602583685.

The spelling of 128527872 in words is "one hundred twenty-eight million, five hundred twenty-seven thousand, eight hundred seventy-two".