136343680 has 128 divisors (see below), whose sum is σ = 360884160. Its totient is φ = 48844800.

The previous prime is 136343659. The next prime is 136343681. The reversal of 136343680 is 86343631.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (136343681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 753190 + ... + 753370.

Almost surely, 2^136343680 is an apocalyptic number.

136343680 is a gapful number since it is divisible by the number (10) 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 136343680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180442080).

136343680 is an abundant number, since it is smaller than the sum of its proper divisors (224540480).

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

136343680 is a wasteful number, since it uses less digits than its factorization.

136343680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 306 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 136343680 is about 11676.6296507169. The cubic root of 136343680 is about 514.6891390702.

The spelling of 136343680 in words is "one hundred thirty-six million, three hundred forty-three thousand, six hundred eighty".