128282508 has 24 divisors (see below), whose sum is σ = 332584560. Its totient is φ = 42760800.

The previous prime is 128282507. The next prime is 128282513. The reversal of 128282508 is 805282821.

It is a happy number.

128282508 is a `hidden beast` number, since 128 + 28 + 2 + 508 = 666.

It is a super-3 number, since 3×128282508³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (128282507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 593793 + ... + 594008.

It is an arithmetic number, because the mean of its divisors is an integer number (13857690).

Almost surely, 2^128282508 is an apocalyptic number.

128282508 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

128282508 is an abundant number, since it is smaller than the sum of its proper divisors (204302052).

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

128282508 is a wasteful number, since it uses less digits than its factorization.

128282508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187814 (or 1187806 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 128282508 is about 11326.1868252294. The cubic root of 128282508 is about 504.3389160349.

The spelling of 128282508 in words is "one hundred twenty-eight million, two hundred eighty-two thousand, five hundred eight".