135608520 has 64 divisors (see below), whose sum is σ = 407592000. Its totient is φ = 36094208.

The previous prime is 135608519. The next prime is 135608527. The reversal of 135608520 is 25806531.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (135608527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121726 + ... + 122834.

It is an arithmetic number, because the mean of its divisors is an integer number (6368625).

Almost surely, 2^135608520 is an apocalyptic number.

135608520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135608520 is an abundant number, since it is smaller than the sum of its proper divisors (271983480).

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

135608520 is a wasteful number, since it uses less digits than its factorization.

135608520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2142 (or 2138 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 135608520 is about 11645.1071270298. The cubic root of 135608520 is about 513.7624099393.

The spelling of 135608520 in words is "one hundred thirty-five million, six hundred eight thousand, five hundred twenty".