135235152 has 90 divisors (see below), whose sum is σ = 409896942. Its totient is φ = 41603328.

The previous prime is 135235151. The next prime is 135235157. The reversal of 135235152 is 251532531.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 9884736 + 125350416 = 3144^2 + 11196^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135235151) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 21558 + ... + 27114.

Almost surely, 2^135235152 is an apocalyptic number.

135235152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135235152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204948471).

135235152 is an abundant number, since it is smaller than the sum of its proper divisors (274661790).

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

135235152 is a wasteful number, since it uses less digits than its factorization.

135235152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5597 (or 5575 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 135235152 is about 11629.0649667116. The cubic root of 135235152 is about 513.2904662392.

Adding to 135235152 its reverse (251532531), we get a palindrome (386767683).

The spelling of 135235152 in words is "one hundred thirty-five million, two hundred thirty-five thousand, one hundred fifty-two".