135239872 has 28 divisors (see below), whose sum is σ = 282493720. Its totient is φ = 64060416.

The previous prime is 135239857. The next prime is 135239893. The reversal of 135239872 is 278932531.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54393 + ... + 56824.

Almost surely, 2^135239872 is an apocalyptic number.

It is an amenable number.

135239872 is an abundant number, since it is smaller than the sum of its proper divisors (147253848).

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

135239872 is a wasteful number, since it uses less digits than its factorization.

135239872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111248 (or 111238 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 135239872 is about 11629.2679047307. The cubic root of 135239872 is about 513.2964378197.

The spelling of 135239872 in words is "one hundred thirty-five million, two hundred thirty-nine thousand, eight hundred seventy-two".