136542636 has 36 divisors (see below), whose sum is σ = 349315512. Its totient is φ = 44964864.

The previous prime is 136542629. The next prime is 136542667. The reversal of 136542636 is 636245631.

136542636 is a `hidden beast` number, since 13 + 6 + 5 + 4 + 2 + 636 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 136542636.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19861 + ... + 25836.

Almost surely, 2^136542636 is an apocalyptic number.

It is an amenable number.

136542636 is an abundant number, since it is smaller than the sum of its proper divisors (212772876).

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

136542636 is a wasteful number, since it uses less digits than its factorization.

136542636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45790 (or 45785 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 136542636 is about 11685.1459554427. The cubic root of 136542636 is about 514.9393663495.

It can be divided in two parts, 13654 and 2636, that added together give a triangular number (16290 = T₁₈₀).

The spelling of 136542636 in words is "one hundred thirty-six million, five hundred forty-two thousand, six hundred thirty-six".