136510640 has 40 divisors (see below), whose sum is σ = 362729760. Its totient is φ = 46803456.

The previous prime is 136510631. The next prime is 136510709. The reversal of 136510640 is 46015631.

It is a tau number, because it is divible by the number of its divisors (40).

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, 121325 + ... + 122444.

It is an arithmetic number, because the mean of its divisors is an integer number (9068244).

Almost surely, 2^136510640 is an apocalyptic number.

136510640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136510640 is an abundant number, since it is smaller than the sum of its proper divisors (226219120).

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

136510640 is a wasteful number, since it uses less digits than its factorization.

136510640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243789 (or 243783 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 136510640 is about 11683.7767866388. The cubic root of 136510640 is about 514.8991413386.

The spelling of 136510640 in words is "one hundred thirty-six million, five hundred ten thousand, six hundred forty".