135235520 has 56 divisors (see below), whose sum is σ = 368039904. Its totient is φ = 46365696.

The previous prime is 135235519. The next prime is 135235523. The reversal of 135235520 is 25532531.

It is a tau number, because it is divible by the number of its divisors (56).

It is a self number, because there is not a number n which added to its sum of digits gives 135235520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135235523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27947 + ... + 32426.

Almost surely, 2^135235520 is an apocalyptic number.

135235520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135235520 is an abundant number, since it is smaller than the sum of its proper divisors (232804384).

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

135235520 is an equidigital number, since it uses as much as digits as its factorization.

135235520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60397 (or 60387 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 135235520 is about 11629.0807891252. The cubic root of 135235520 is about 513.2909318250.

The spelling of 135235520 in words is "one hundred thirty-five million, two hundred thirty-five thousand, five hundred twenty".