135292728 has 32 divisors (see below), whose sum is σ = 338607360. Its totient is φ = 45047520.

The previous prime is 135292721. The next prime is 135292733. The reversal of 135292728 is 827292531.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135292721) 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, 23601 + ... + 28767.

It is an arithmetic number, because the mean of its divisors is an integer number (10581480).

Almost surely, 2^135292728 is an apocalyptic number.

It is an amenable number.

135292728 is an abundant number, since it is smaller than the sum of its proper divisors (203314632).

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

135292728 is a wasteful number, since it uses less digits than its factorization.

135292728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6267 (or 6263 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 135292728 is about 11631.5402247510. The cubic root of 135292728 is about 513.3632999129.

The spelling of 135292728 in words is "one hundred thirty-five million, two hundred ninety-two thousand, seven hundred twenty-eight".