128487828 has 48 divisors (see below), whose sum is σ = 351903104. Its totient is φ = 35717760.

The previous prime is 128487803. The next prime is 128487841. The reversal of 128487828 is 828784821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17563 + ... + 23778.

Almost surely, 2^128487828 is an apocalyptic number.

It is an amenable number.

128487828 is an abundant number, since it is smaller than the sum of its proper divisors (223415276).

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

128487828 is a wasteful number, since it uses less digits than its factorization.

128487828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41392 (or 41390 counting only the distinct ones).

The product of its digits is 458752, while the sum is 48.

The square root of 128487828 is about 11335.2471521357. The cubic root of 128487828 is about 504.6078424628.

The spelling of 128487828 in words is "one hundred twenty-eight million, four hundred eighty-seven thousand, eight hundred twenty-eight".