135436728 has 64 divisors (see below), whose sum is σ = 400320000. Its totient is φ = 37360512.

The previous prime is 135436727. The next prime is 135436733. The reversal of 135436728 is 827634531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135436727) 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 15 ways as a sum of consecutive naturals, for example, 9028 + ... + 18771.

It is an arithmetic number, because the mean of its divisors is an integer number (6255000).

Almost surely, 2^135436728 is an apocalyptic number.

It is an amenable number.

135436728 is an abundant number, since it is smaller than the sum of its proper divisors (264883272).

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

135436728 is a wasteful number, since it uses less digits than its factorization.

135436728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27844 (or 27840 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 135436728 is about 11637.7286443704. The cubic root of 135436728 is about 513.5453695739.

The spelling of 135436728 in words is "one hundred thirty-five million, four hundred thirty-six thousand, seven hundred twenty-eight".