135798728 has 32 divisors (see below), whose sum is σ = 274692600. Its totient is φ = 62565888.

The previous prime is 135798721. The next prime is 135798763. The reversal of 135798728 is 827897531.

It can be written as a sum of positive squares in 4 ways, for example, as 67207204 + 68591524 = 8198^2 + 8282^2 .

It is not an unprimeable number, because it can be changed into a prime (135798721) 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, 104708 + ... + 105996.

Almost surely, 2^135798728 is an apocalyptic number.

It is an amenable number.

135798728 is an abundant number, since it is smaller than the sum of its proper divisors (138893872).

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

135798728 is a wasteful number, since it uses less digits than its factorization.

135798728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2321 (or 2317 counting only the distinct ones).

The product of its digits is 846720, while the sum is 50.

The square root of 135798728 is about 11653.2711287432. The cubic root of 135798728 is about 514.0025031799.

The spelling of 135798728 in words is "one hundred thirty-five million, seven hundred ninety-eight thousand, seven hundred twenty-eight".