135128346 has 16 divisors (see below), whose sum is σ = 270864000. Its totient is φ = 44941568.

The previous prime is 135128341. The next prime is 135128369. The reversal of 135128346 is 643821531.

It is not an unprimeable number, because it can be changed into a prime (135128341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22386 + ... + 27773.

It is an arithmetic number, because the mean of its divisors is an integer number (16929000).

Almost surely, 2^135128346 is an apocalyptic number.

135128346 is an abundant number, since it is smaller than the sum of its proper divisors (135735654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135128346 is a wasteful number, since it uses less digits than its factorization.

135128346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50613.

The product of its digits is 17280, while the sum is 33.

The square root of 135128346 is about 11624.4718589706. The cubic root of 135128346 is about 513.1553018246.

Adding to 135128346 its reverse (643821531), we get a palindrome (778949877).

The spelling of 135128346 in words is "one hundred thirty-five million, one hundred twenty-eight thousand, three hundred forty-six".