135808530 has 64 divisors (see below), whose sum is σ = 382935168. Its totient is φ = 30389760.

The previous prime is 135808507. The next prime is 135808559. The reversal of 135808530 is 35808531.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 135808491 and 135808500.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11539 + ... + 20118.

It is an arithmetic number, because the mean of its divisors is an integer number (5983362).

Almost surely, 2^135808530 is an apocalyptic number.

135808530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135808530 is an abundant number, since it is smaller than the sum of its proper divisors (247126638).

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

135808530 is a wasteful number, since it uses less digits than its factorization.

135808530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31691.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 135808530 is about 11653.6916897608. The cubic root of 135808530 is about 514.0148698429.

Subtracting from 135808530 its reverse (35808531), we obtain a palindrome (99999999).

The spelling of 135808530 in words is "one hundred thirty-five million, eight hundred eight thousand, five hundred thirty".