136285728 has 24 divisors (see below), whose sum is σ = 357750288. Its totient is φ = 45428544.

The previous prime is 136285717. The next prime is 136285729. The reversal of 136285728 is 827582631.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 136285728.

It is not an unprimeable number, because it can be changed into a prime (136285729) 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 3 ways as a sum of consecutive naturals, for example, 709726 + ... + 709917.

It is an arithmetic number, because the mean of its divisors is an integer number (14906262).

Almost surely, 2^136285728 is an apocalyptic number.

It is an amenable number.

136285728 is an abundant number, since it is smaller than the sum of its proper divisors (221464560).

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

136285728 is a wasteful number, since it uses less digits than its factorization.

136285728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419656 (or 1419648 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 136285728 is about 11674.1478489867. The cubic root of 136285728 is about 514.6162069721.

The spelling of 136285728 in words is "one hundred thirty-six million, two hundred eighty-five thousand, seven hundred twenty-eight".