135781712 has 80 divisors (see below), whose sum is σ = 305337600. Its totient is φ = 57899520.

The previous prime is 135781699. The next prime is 135781747. The reversal of 135781712 is 217187531.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188489 + ... + 189207.

It is an arithmetic number, because the mean of its divisors is an integer number (3816720).

Almost surely, 2^135781712 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 135781712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152668800).

135781712 is an abundant number, since it is smaller than the sum of its proper divisors (169555888).

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

135781712 is a wasteful number, since it uses less digits than its factorization.

135781712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804 (or 798 counting only the distinct ones).

The product of its digits is 11760, while the sum is 35.

The square root of 135781712 is about 11652.5410104406. The cubic root of 135781712 is about 513.9810335828.

The spelling of 135781712 in words is "one hundred thirty-five million, seven hundred eighty-one thousand, seven hundred twelve".