128236 has 6 divisors (see below), whose sum is σ = 224420. Its totient is φ = 64116.

The previous prime is 128221. The next prime is 128237. The reversal of 128236 is 632821.

It is not an unprimeable number, because it can be changed into a prime (128237) 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 as a sum of consecutive naturals, namely, 16026 + ... + 16033.

2¹²⁸²³⁶ is an apocalyptic number.

It is an amenable number.

128236 is a deficient number, since it is larger than the sum of its proper divisors (96184).

128236 is a wasteful number, since it uses less digits than its factorization.

128236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32063 (or 32061 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

The square root of 128236 is about 358.1005445402. The cubic root of 128236 is about 50.4277960389.

The spelling of 128236 in words is "one hundred twenty-eight thousand, two hundred thirty-six".