135213648 has 40 divisors (see below), whose sum is σ = 369851328. Its totient is φ = 42419712.

The previous prime is 135213647. The next prime is 135213679. The reversal of 135213648 is 846312531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135213643) 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, 82036 + ... + 83667.

Almost surely, 2^135213648 is an apocalyptic number.

It is an amenable number.

135213648 is an abundant number, since it is smaller than the sum of its proper divisors (234637680).

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

135213648 is a wasteful number, since it uses less digits than its factorization.

135213648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165731 (or 165725 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 135213648 is about 11628.1403500302. The cubic root of 135213648 is about 513.2632583643.

The spelling of 135213648 in words is "one hundred thirty-five million, two hundred thirteen thousand, six hundred forty-eight".