135028 has 6 divisors (see below), whose sum is σ = 236306. Its totient is φ = 67512.

The previous prime is 135019. The next prime is 135029. The reversal of 135028 is 820531.

It is a happy number.

135028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 121104 + 13924 = 348^2 + 118^2 .

It is a junction number, because it is equal to n+sod(n) for n = 134996 and 135014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16875 + ... + 16882.

2¹³⁵⁰²⁸ is an apocalyptic number.

It is an amenable number.

135028 is a deficient number, since it is larger than the sum of its proper divisors (101278).

135028 is a wasteful number, since it uses less digits than its factorization.

135028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33761 (or 33759 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 135028 is about 367.4615626157. The cubic root of 135028 is about 51.3028247719.

Adding to 135028 its reverse (820531), we get a palindrome (955559).

It can be divided in two parts, 1350 and 28, that added together give a triangular number (1378 = T₅₂).

The spelling of 135028 in words is "one hundred thirty-five thousand, twenty-eight".