128788 has 12 divisors (see below), whose sum is σ = 245952. Its totient is φ = 58520.

The previous prime is 128767. The next prime is 128813. The reversal of 128788 is 887821.

It is an Ulam number.

It is a nialpdrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1420 + ... + 1507.

It is an arithmetic number, because the mean of its divisors is an integer number (20496).

2¹²⁸⁷⁸⁸ is an apocalyptic number.

It is an amenable number.

128788 is a deficient number, since it is larger than the sum of its proper divisors (117164).

128788 is a wasteful number, since it uses less digits than its factorization.

128788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2942 (or 2940 counting only the distinct ones).

The product of its digits is 7168, while the sum is 34.

The square root of 128788 is about 358.8704501627. The cubic root of 128788 is about 50.5000490148.

The spelling of 128788 in words is "one hundred twenty-eight thousand, seven hundred eighty-eight".