130639040 has 56 divisors (see below), whose sum is σ = 355530912. Its totient is φ = 44789760.

The previous prime is 130639027. The next prime is 130639051. The reversal of 130639040 is 40936031.

It is a tau number, because it is divible by the number of its divisors (56).

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, 26921 + ... + 31400.

Almost surely, 2^130639040 is an apocalyptic number.

130639040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130639040 is an abundant number, since it is smaller than the sum of its proper divisors (224891872).

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

130639040 is an equidigital number, since it uses as much as digits as its factorization.

130639040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58345 (or 58335 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 130639040 is about 11429.7436541683. The cubic root of 130639040 is about 507.4084088150.

The spelling of 130639040 in words is "one hundred thirty million, six hundred thirty-nine thousand, forty".