135839928 has 64 divisors (see below), whose sum is σ = 410952960. Its totient is φ = 36527616.

The previous prime is 135839927. The next prime is 135839939. The reversal of 135839928 is 829938531.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135839927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20926 + ... + 26637.

It is an arithmetic number, because the mean of its divisors is an integer number (6421140).

Almost surely, 2^135839928 is an apocalyptic number.

It is an amenable number.

135839928 is an abundant number, since it is smaller than the sum of its proper divisors (275113032).

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

135839928 is a wasteful number, since it uses less digits than its factorization.

135839928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47596 (or 47592 counting only the distinct ones).

The product of its digits is 466560, while the sum is 48.

The square root of 135839928 is about 11655.0387386744. The cubic root of 135839928 is about 514.0544790272.

The spelling of 135839928 in words is "one hundred thirty-five million, eight hundred thirty-nine thousand, nine hundred twenty-eight".