128287488 has 144 divisors (see below), whose sum is σ = 398988800. Its totient is φ = 36578304.

The previous prime is 128287477. The next prime is 128287493. The reversal of 128287488 is 884782821.

It is a super-3 number, since 3×128287488³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a nude number because it is divisible by every one of its digits.

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, 263181 + ... + 263667.

Almost surely, 2^128287488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128287488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199494400).

128287488 is an abundant number, since it is smaller than the sum of its proper divisors (270701312).

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

128287488 is an frugal number, since it uses more digits than its factorization.

128287488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527 (or 499 counting only the distinct ones).

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

The square root of 128287488 is about 11326.4066676065. The cubic root of 128287488 is about 504.3454421918.

The spelling of 128287488 in words is "one hundred twenty-eight million, two hundred eighty-seven thousand, four hundred eighty-eight".