128188 has 12 divisors (see below), whose sum is σ = 227920. Its totient is φ = 63072.

The previous prime is 128173. The next prime is 128189. The reversal of 128188 is 881821.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128189) by changing a digit.

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, 73 + ... + 511.

2¹²⁸¹⁸⁸ is an apocalyptic number.

It is an amenable number.

128188 is a deficient number, since it is larger than the sum of its proper divisors (99732).

128188 is a wasteful number, since it uses less digits than its factorization.

128188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516 (or 514 counting only the distinct ones).

The product of its digits is 1024, while the sum is 28.

The square root of 128188 is about 358.0335179840. The cubic root of 128188 is about 50.4215033798.

It can be divided in two parts, 1281 and 88, that added together give a square (1369 = 37²).

The spelling of 128188 in words is "one hundred twenty-eight thousand, one hundred eighty-eight".