135539712 has 264 divisors, whose sum is σ = 490493952. Its totient is φ = 35020800.

The previous prime is 135539689. The next prime is 135539753. The reversal of 135539712 is 217935531.

135539712 is a `hidden beast` number, since 1 + 3 + 553 + 97 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (264).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 709537 + ... + 709727.

Almost surely, 2^135539712 is an apocalyptic number.

135539712 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 135539712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245246976).

135539712 is an abundant number, since it is smaller than the sum of its proper divisors (354954240).

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

135539712 is a wasteful number, since it uses less digits than its factorization.

135539712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 214 counting only the distinct ones).

The product of its digits is 28350, while the sum is 36.

The square root of 135539712 is about 11642.1523783191. The cubic root of 135539712 is about 513.6755005902.

The spelling of 135539712 in words is "one hundred thirty-five million, five hundred thirty-nine thousand, seven hundred twelve".