128382756 has 24 divisors (see below), whose sum is σ = 305934720. Its totient is φ = 41883552.

The previous prime is 128382731. The next prime is 128382799. The reversal of 128382756 is 657283821.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113251 + ... + 114378.

It is an arithmetic number, because the mean of its divisors is an integer number (12747280).

Almost surely, 2^128382756 is an apocalyptic number.

It is an amenable number.

128382756 is an abundant number, since it is smaller than the sum of its proper divisors (177551964).

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

128382756 is a wasteful number, since it uses less digits than its factorization.

128382756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227683 (or 227681 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 128382756 is about 11330.6114574634. The cubic root of 128382756 is about 504.4702558520.

The spelling of 128382756 in words is "one hundred twenty-eight million, three hundred eighty-two thousand, seven hundred fifty-six".