128752 has 20 divisors (see below), whose sum is σ = 269080. Its totient is φ = 59328.

The previous prime is 128749. The next prime is 128761. The reversal of 128752 is 257821.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102 + ... + 517.

It is an arithmetic number, because the mean of its divisors is an integer number (13454).

2¹²⁸⁷⁵² is an apocalyptic number.

It is an amenable number.

128752 is an abundant number, since it is smaller than the sum of its proper divisors (140328).

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

128752 is a wasteful number, since it uses less digits than its factorization.

128752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640 (or 634 counting only the distinct ones).

The product of its digits is 1120, while the sum is 25.

The square root of 128752 is about 358.8202892814. The cubic root of 128752 is about 50.4953431644.

The spelling of 128752 in words is "one hundred twenty-eight thousand, seven hundred fifty-two".