135781932 has 96 divisors (see below), whose sum is σ = 378088704. Its totient is φ = 37382400.

The previous prime is 135781927. The next prime is 135781939. The reversal of 135781932 is 239187531.

135781932 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (135781939) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114382 + ... + 115562.

It is an arithmetic number, because the mean of its divisors is an integer number (3938424).

Almost surely, 2^135781932 is an apocalyptic number.

135781932 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 135781932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189044352).

135781932 is an abundant number, since it is smaller than the sum of its proper divisors (242306772).

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

135781932 is a wasteful number, since it uses less digits than its factorization.

135781932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279 (or 1277 counting only the distinct ones).

The product of its digits is 45360, while the sum is 39.

The square root of 135781932 is about 11652.5504504379. The cubic root of 135781932 is about 513.9813111748.

The spelling of 135781932 in words is "one hundred thirty-five million, seven hundred eighty-one thousand, nine hundred thirty-two".