128753732 has 12 divisors (see below), whose sum is σ = 225512700. Its totient is φ = 64321536.

The previous prime is 128753717. The next prime is 128753759. The reversal of 128753732 is 237357821.

It can be written as a sum of positive squares in 2 ways, for example, as 26460736 + 102292996 = 5144^2 + 10114^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

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, 8357 + ... + 18092.

It is an arithmetic number, because the mean of its divisors is an integer number (18792725).

Almost surely, 2^128753732 is an apocalyptic number.

It is an amenable number.

128753732 is a deficient number, since it is larger than the sum of its proper divisors (96758968).

128753732 is a wasteful number, since it uses less digits than its factorization.

128753732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27670 (or 27668 counting only the distinct ones).

The product of its digits is 70560, while the sum is 38.

The square root of 128753732 is about 11346.9701682872. The cubic root of 128753732 is about 504.9556958813.

The spelling of 128753732 in words is "one hundred twenty-eight million, seven hundred fifty-three thousand, seven hundred thirty-two".