136911980 has 24 divisors (see below), whose sum is σ = 287945280. Its totient is φ = 54682880.

The previous prime is 136911961. The next prime is 136911989. The reversal of 136911980 is 89119631.

It is not an unprimeable number, because it can be changed into a prime (136911989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9620 + ... + 19140.

It is an arithmetic number, because the mean of its divisors is an integer number (11997720).

Almost surely, 2^136911980 is an apocalyptic number.

136911980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136911980 is an abundant number, since it is smaller than the sum of its proper divisors (151033300).

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

136911980 is a wasteful number, since it uses less digits than its factorization.

136911980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10249 (or 10247 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 136911980 is about 11700.9392785366. The cubic root of 136911980 is about 515.4032471859.

The spelling of 136911980 in words is "one hundred thirty-six million, nine hundred eleven thousand, nine hundred eighty".