135720528 has 40 divisors (see below), whose sum is σ = 351245376. Its totient is φ = 45158400.

The previous prime is 135720523. The next prime is 135720583. The reversal of 135720528 is 825027531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135720523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28048 + ... + 32528.

Almost surely, 2^135720528 is an apocalyptic number.

It is an amenable number.

135720528 is an abundant number, since it is smaller than the sum of its proper divisors (215524848).

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

135720528 is a wasteful number, since it uses less digits than its factorization.

135720528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5123 (or 5117 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 135720528 is about 11649.9153644994. The cubic root of 135720528 is about 513.9038210732.

The spelling of 135720528 in words is "one hundred thirty-five million, seven hundred twenty thousand, five hundred twenty-eight".