136891208 has 24 divisors (see below), whose sum is σ = 272662050. Its totient is φ = 64418304.

The previous prime is 136891207. The next prime is 136891229. The reversal of 136891208 is 802198631.

136891208 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 136375684 + 515524 = 11678^2 + 718^2 .

It is not an unprimeable number, because it can be changed into a prime (136891207) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27293 + ... + 31916.

Almost surely, 2^136891208 is an apocalyptic number.

It is an amenable number.

136891208 is a deficient number, since it is larger than the sum of its proper divisors (135770842).

136891208 is a wasteful number, since it uses less digits than its factorization.

136891208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59249 (or 59228 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 136891208 is about 11700.0516238177. The cubic root of 136891208 is about 515.3771805657.

The spelling of 136891208 in words is "one hundred thirty-six million, eight hundred ninety-one thousand, two hundred eight".