128988032 has 16 divisors (see below), whose sum is σ = 256968600. Its totient is φ = 64493952.

The previous prime is 128988011. The next prime is 128988049. The reversal of 128988032 is 230889821.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (16).

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 as a sum of consecutive naturals, namely, 503732 + ... + 503987.

Almost surely, 2^128988032 is an apocalyptic number.

It is an amenable number.

128988032 is a deficient number, since it is larger than the sum of its proper divisors (127980568).

128988032 is an equidigital number, since it uses as much as digits as its factorization.

128988032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007733 (or 1007721 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 128988032 is about 11357.2898175577. The cubic root of 128988032 is about 505.2618085003.

The spelling of 128988032 in words is "one hundred twenty-eight million, nine hundred eighty-eight thousand, thirty-two".