135644132 has 18 divisors (see below), whose sum is σ = 257042898. Its totient is φ = 62604672.

The previous prime is 135644129. The next prime is 135644137. The reversal of 135644132 is 231446531.

It can be written as a sum of positive squares in 3 ways, for example, as 16048036 + 119596096 = 4006^2 + 10936^2 .

It is a junction number, because it is equal to n+sod(n) for n = 135644095 and 135644104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135644137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 99653 + ... + 101004.

It is an arithmetic number, because the mean of its divisors is an integer number (14280161).

Almost surely, 2^135644132 is an apocalyptic number.

It is an amenable number.

135644132 is a deficient number, since it is larger than the sum of its proper divisors (121398766).

135644132 is a wasteful number, since it uses less digits than its factorization.

135644132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200687 (or 200672 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 135644132 is about 11646.6360808604. The cubic root of 135644132 is about 513.8073788582.

The spelling of 135644132 in words is "one hundred thirty-five million, six hundred forty-four thousand, one hundred thirty-two".