128768032 has 12 divisors (see below), whose sum is σ = 253512126. Its totient is φ = 64384000.

The previous prime is 128768021. The next prime is 128768041. The reversal of 128768032 is 230867821.

It can be written as a sum of positive squares in only one way, i.e., 111429136 + 17338896 = 10556^2 + 4164^2 .

It is a junction number, because it is equal to n+sod(n) for n = 128767982 and 128768000.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2011969 + ... + 2012032.

Almost surely, 2^128768032 is an apocalyptic number.

It is an amenable number.

128768032 is a deficient number, since it is larger than the sum of its proper divisors (124744094).

128768032 is an equidigital number, since it uses as much as digits as its factorization.

128768032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4024011 (or 4024003 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 128768032 is about 11347.6002749480. The cubic root of 128768032 is about 504.9743894472.

The spelling of 128768032 in words is "one hundred twenty-eight million, seven hundred sixty-eight thousand, thirty-two".