128703328 has 48 divisors (see below), whose sum is σ = 288943200. Its totient is φ = 55904256.

The previous prime is 128703317. The next prime is 128703349. The reversal of 128703328 is 823307821.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 128703293 and 128703302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2028 + ... + 16171.

It is an arithmetic number, because the mean of its divisors is an integer number (6019650).

Almost surely, 2^128703328 is an apocalyptic number.

It is an amenable number.

128703328 is an abundant number, since it is smaller than the sum of its proper divisors (160239872).

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

128703328 is a wasteful number, since it uses less digits than its factorization.

128703328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18239 (or 18231 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 128703328 is about 11344.7489174508. The cubic root of 128703328 is about 504.8897945970.

The spelling of 128703328 in words is "one hundred twenty-eight million, seven hundred three thousand, three hundred twenty-eight".