128751532 has 48 divisors (see below), whose sum is σ = 286896960. Its totient is φ = 49174272.

The previous prime is 128751529. The next prime is 128751533. The reversal of 128751532 is 235157821.

It is not an unprimeable number, because it can be changed into a prime (128751533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4458 + ... + 16654.

It is an arithmetic number, because the mean of its divisors is an integer number (5977020).

Almost surely, 2^128751532 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 128751532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143448480).

128751532 is an abundant number, since it is smaller than the sum of its proper divisors (158145428).

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

128751532 is a wasteful number, since it uses less digits than its factorization.

128751532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12250 (or 12248 counting only the distinct ones).

The product of its digits is 16800, while the sum is 34.

The square root of 128751532 is about 11346.8732256953. The cubic root of 128751532 is about 504.9528198252.

The spelling of 128751532 in words is "one hundred twenty-eight million, seven hundred fifty-one thousand, five hundred thirty-two".