135908136 has 96 divisors (see below), whose sum is σ = 453048960. Its totient is φ = 35842176.

The previous prime is 135908119. The next prime is 135908137. The reversal of 135908136 is 631809531.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 135908136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135908137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3820 + ... + 16923.

It is an arithmetic number, because the mean of its divisors is an integer number (4719260).

Almost surely, 2^135908136 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 135908136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226524480).

135908136 is an abundant number, since it is smaller than the sum of its proper divisors (317140824).

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

135908136 is a wasteful number, since it uses less digits than its factorization.

135908136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20775 (or 20768 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 135908136 is about 11657.9644878512. The cubic root of 135908136 is about 514.1405037121.

The spelling of 135908136 in words is "one hundred thirty-five million, nine hundred eight thousand, one hundred thirty-six".