135155232 has 72 divisors (see below), whose sum is σ = 387842364. Its totient is φ = 44642304.

The previous prime is 135155213. The next prime is 135155233. The reversal of 135155232 is 232551531.

It is a happy number.

135155232 is a `hidden beast` number, since 135 + 1 + 5 + 523 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 83832336 + 51322896 = 9156^2 + 7164^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 135155196 and 135155205.

It is not an unprimeable number, because it can be changed into a prime (135155233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30468 + ... + 34620.

Almost surely, 2^135155232 is an apocalyptic number.

135155232 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 135155232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193921182).

135155232 is an abundant number, since it is smaller than the sum of its proper divisors (252687132).

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

135155232 is a wasteful number, since it uses less digits than its factorization.

135155232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4282 (or 4271 counting only the distinct ones).

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

The square root of 135155232 is about 11625.6282410887. The cubic root of 135155232 is about 513.1893331213.

The spelling of 135155232 in words is "one hundred thirty-five million, one hundred fifty-five thousand, two hundred thirty-two".