135397828 has 12 divisors (see below), whose sum is σ = 241417260. Its totient is φ = 66421472.

The previous prime is 135397813. The next prime is 135397859. The reversal of 135397828 is 828793531.

It can be written as a sum of positive squares in 2 ways, for example, as 90668484 + 44729344 = 9522^2 + 6688^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319123 + ... + 319546.

It is an arithmetic number, because the mean of its divisors is an integer number (20118105).

Almost surely, 2^135397828 is an apocalyptic number.

It is an amenable number.

135397828 is a deficient number, since it is larger than the sum of its proper divisors (106019432).

135397828 is a wasteful number, since it uses less digits than its factorization.

135397828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638726 (or 638724 counting only the distinct ones).

The product of its digits is 362880, while the sum is 46.

The square root of 135397828 is about 11636.0572360229. The cubic root of 135397828 is about 513.4961982054.

The spelling of 135397828 in words is "one hundred thirty-five million, three hundred ninety-seven thousand, eight hundred twenty-eight".