135839288 has 64 divisors (see below), whose sum is σ = 289396800. Its totient is φ = 59304960.

The previous prime is 135839281. The next prime is 135839293. The reversal of 135839288 is 882938531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135839281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260468 + ... + 260988.

It is an arithmetic number, because the mean of its divisors is an integer number (4521825).

Almost surely, 2^135839288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135839288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144698400).

135839288 is an abundant number, since it is smaller than the sum of its proper divisors (153557512).

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

135839288 is a wasteful number, since it uses less digits than its factorization.

135839288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672 (or 668 counting only the distinct ones).

The product of its digits is 414720, while the sum is 47.

The square root of 135839288 is about 11655.0112827058. The cubic root of 135839288 is about 514.0536717158.

The spelling of 135839288 in words is "one hundred thirty-five million, eight hundred thirty-nine thousand, two hundred eighty-eight".