136317808 has 40 divisors (see below), whose sum is σ = 289802880. Its totient is φ = 61602240.

The previous prime is 136317793. The next prime is 136317821. The reversal of 136317808 is 808713631.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29341 + ... + 33667.

It is an arithmetic number, because the mean of its divisors is an integer number (7245072).

Almost surely, 2^136317808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136317808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144901440).

136317808 is an abundant number, since it is smaller than the sum of its proper divisors (153485072).

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

136317808 is a wasteful number, since it uses less digits than its factorization.

136317808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4525 (or 4519 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 136317808 is about 11675.5217442305. The cubic root of 136317808 is about 514.6565819329.

The spelling of 136317808 in words is "one hundred thirty-six million, three hundred seventeen thousand, eight hundred eight".