136541808 has 160 divisors (see below), whose sum is σ = 433097280. Its totient is φ = 40919040.

The previous prime is 136541761. The next prime is 136541819. The reversal of 136541808 is 808145631.

136541808 is a `hidden beast` number, since 1 + 36 + 541 + 80 + 8 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 229960 + ... + 230552.

It is an arithmetic number, because the mean of its divisors is an integer number (2706858).

Almost surely, 2^136541808 is an apocalyptic number.

136541808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136541808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216548640).

136541808 is an abundant number, since it is smaller than the sum of its proper divisors (296555472).

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

136541808 is a wasteful number, since it uses less digits than its factorization.

136541808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 136541808 is about 11685.1105257931. The cubic root of 136541808 is about 514.9383254764.

The spelling of 136541808 in words is "one hundred thirty-six million, five hundred forty-one thousand, eight hundred eight".