136256718 has 64 divisors (see below), whose sum is σ = 311334912. Its totient is φ = 39450240.

The previous prime is 136256711. The next prime is 136256719. The reversal of 136256718 is 817652631.

136256718 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136256711) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88705 + ... + 90227.

It is an arithmetic number, because the mean of its divisors is an integer number (4864608).

Almost surely, 2^136256718 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136256718, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155667456).

136256718 is an abundant number, since it is smaller than the sum of its proper divisors (175078194).

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

136256718 is a wasteful number, since it uses less digits than its factorization.

136256718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1609.

The product of its digits is 60480, while the sum is 39.

The square root of 136256718 is about 11672.9052938846. The cubic root of 136256718 is about 514.5796903689.

The spelling of 136256718 in words is "one hundred thirty-six million, two hundred fifty-six thousand, seven hundred eighteen".