130856640 has 56 divisors (see below), whose sum is σ = 415472880. Its totient is φ = 34894848.

The previous prime is 130856639. The next prime is 130856657. The reversal of 130856640 is 46658031.

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, 67195 + ... + 69114.

Almost surely, 2^130856640 is an apocalyptic number.

130856640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130856640 is an abundant number, since it is smaller than the sum of its proper divisors (284616240).

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

130856640 is a wasteful number, since it uses less digits than its factorization.

130856640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136329 (or 136319 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 130856640 is about 11439.2587172421. The cubic root of 130856640 is about 507.6899755491.

The spelling of 130856640 in words is "one hundred thirty million, eight hundred fifty-six thousand, six hundred forty".