136808740 has 24 divisors (see below), whose sum is σ = 302420160. Its totient is φ = 51843168.

The previous prime is 136808723. The next prime is 136808779. The reversal of 136808740 is 47808631.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 136808740.

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, 179632 + ... + 180391.

It is an arithmetic number, because the mean of its divisors is an integer number (12600840).

Almost surely, 2^136808740 is an apocalyptic number.

136808740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136808740 is an abundant number, since it is smaller than the sum of its proper divisors (165611420).

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

136808740 is a wasteful number, since it uses less digits than its factorization.

136808740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360051 (or 360049 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 136808740 is about 11696.5268349198. The cubic root of 136808740 is about 515.2736660943.

The spelling of 136808740 in words is "one hundred thirty-six million, eight hundred eight thousand, seven hundred forty".