136987508 has 24 divisors (see below), whose sum is σ = 280348992. Its totient is φ = 57343104.

The previous prime is 136987507. The next prime is 136987531. The reversal of 136987508 is 805789631.

It is a happy number.

136987508 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

136987508 is strictly pandigital in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136987507) 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, 55685 + ... + 58092.

It is an arithmetic number, because the mean of its divisors is an integer number (11681208).

Almost surely, 2^136987508 is an apocalyptic number.

It is an amenable number.

136987508 is an abundant number, since it is smaller than the sum of its proper divisors (143361484).

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

136987508 is a wasteful number, since it uses less digits than its factorization.

136987508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113831 (or 113829 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 136987508 is about 11704.1662667616. The cubic root of 136987508 is about 515.4980044659.

The spelling of 136987508 in words is "one hundred thirty-six million, nine hundred eighty-seven thousand, five hundred eight".