135732688 has 120 divisors (see below), whose sum is σ = 333300096. Its totient is φ = 52416000.

The previous prime is 135732677. The next prime is 135732689. The reversal of 135732688 is 886237531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135732689) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1343838 + ... + 1343938.

Almost surely, 2^135732688 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 135732688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166650048).

135732688 is an abundant number, since it is smaller than the sum of its proper divisors (197567408).

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

135732688 is a wasteful number, since it uses less digits than its factorization.

135732688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 194 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The square root of 135732688 is about 11650.4372450136. The cubic root of 135732688 is about 513.9191685031.

It can be divided in two parts, 13573 and 2688, that added together give a palindrome (16261).

The spelling of 135732688 in words is "one hundred thirty-five million, seven hundred thirty-two thousand, six hundred eighty-eight".