128356 has 6 divisors (see below), whose sum is σ = 224630. Its totient is φ = 64176.

The previous prime is 128351. The next prime is 128377. The reversal of 128356 is 653821.

It is a happy number.

128356 is nontrivially palindromic in base 11.

It can be written as a sum of positive squares in only one way, i.e., 70756 + 57600 = 266^2 + 240^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 128356.

It is not an unprimeable number, because it can be changed into a prime (128351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16041 + ... + 16048.

2¹²⁸³⁵⁶ is an apocalyptic number.

It is an amenable number.

128356 is a deficient number, since it is larger than the sum of its proper divisors (96274).

128356 is a wasteful number, since it uses less digits than its factorization.

128356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32093 (or 32091 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 128356 is about 358.2680560698. The cubic root of 128356 is about 50.4435208196.

It can be divided in two parts, 128 and 356, that added together give a palindrome (484).

The spelling of 128356 in words is "one hundred twenty-eight thousand, three hundred fifty-six".