128828589 has 16 divisors (see below), whose sum is σ = 180989952. Its totient is φ = 81349488.

The previous prime is 128828573. The next prime is 128828593. The reversal of 128828589 is 985828821.

It is not a de Polignac number, because 128828589 - 2⁴ = 128828573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128828509) 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, 1957 + ... + 16170.

It is an arithmetic number, because the mean of its divisors is an integer number (11311872).

Almost surely, 2^128828589 is an apocalyptic number.

It is an amenable number.

128828589 is a deficient number, since it is larger than the sum of its proper divisors (52161363).

128828589 is a wasteful number, since it uses less digits than its factorization.

128828589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18256.

The product of its digits is 737280, while the sum is 51.

The square root of 128828589 is about 11350.2682347159. The cubic root of 128828589 is about 505.0535367873.

The spelling of 128828589 in words is "one hundred twenty-eight million, eight hundred twenty-eight thousand, five hundred eighty-nine".