128887488 has 84 divisors (see below), whose sum is σ = 388909560. Its totient is φ = 40697856.

The previous prime is 128887481. The next prime is 128887511. The reversal of 128887488 is 884788821.

128887488 is a `hidden beast` number, since 1 + 2 + 88 + 87 + 488 = 666.

It is a super-2 number, since 2×128887488² = 33223969125900288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128887481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5056 + ... + 16832.

Almost surely, 2^128887488 is an apocalyptic number.

128887488 is a gapful number since it is divisible by the number (18) 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 128887488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194454780).

128887488 is an abundant number, since it is smaller than the sum of its proper divisors (260022072).

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

128887488 is a wasteful number, since it uses less digits than its factorization.

128887488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11814 (or 11801 counting only the distinct ones).

The product of its digits is 1835008, while the sum is 54.

The square root of 128887488 is about 11352.8625465122. The cubic root of 128887488 is about 505.1304933498.

The spelling of 128887488 in words is "one hundred twenty-eight million, eight hundred eighty-seven thousand, four hundred eighty-eight".