136256868 has 36 divisors (see below), whose sum is σ = 375739728. Its totient is φ = 41289840.

The previous prime is 136256863. The next prime is 136256891. The reversal of 136256868 is 868652631.

136256868 is a `hidden beast` number, since 13 + 625 + 6 + 8 + 6 + 8 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (136256863) by changing a digit.

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, 171646 + ... + 172437.

Almost surely, 2^136256868 is an apocalyptic number.

136256868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

136256868 is an abundant number, since it is smaller than the sum of its proper divisors (239482860).

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

136256868 is a wasteful number, since it uses less digits than its factorization.

136256868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344104 (or 344099 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 136256868 is about 11672.9117190185. The cubic root of 136256868 is about 514.5798791961.

The spelling of 136256868 in words is "one hundred thirty-six million, two hundred fifty-six thousand, eight hundred sixty-eight".