136684428 has 24 divisors (see below), whose sum is σ = 319119360. Its totient is φ = 45534480.

The previous prime is 136684417. The next prime is 136684433. The reversal of 136684428 is 824486631.

It is a self number, because there is not a number n which added to its sum of digits gives 136684428.

It is an unprimeable number.

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, 38613 + ... + 42003.

It is an arithmetic number, because the mean of its divisors is an integer number (13296640).

Almost surely, 2^136684428 is an apocalyptic number.

It is an amenable number.

136684428 is an abundant number, since it is smaller than the sum of its proper divisors (182434932).

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

136684428 is a wasteful number, since it uses less digits than its factorization.

136684428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6757 (or 6755 counting only the distinct ones).

The product of its digits is 221184, while the sum is 42.

The square root of 136684428 is about 11691.2115710905. The cubic root of 136684428 is about 515.1175500670.

The spelling of 136684428 in words is "one hundred thirty-six million, six hundred eighty-four thousand, four hundred twenty-eight".