130170640 has 20 divisors (see below), whose sum is σ = 302646924. Its totient is φ = 52068224.

The previous prime is 130170629. The next prime is 130170671. The reversal of 130170640 is 46071031.

It can be written as a sum of positive squares in 2 ways, for example, as 62536464 + 67634176 = 7908^2 + 8224^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 813487 + ... + 813646.

Almost surely, 2^130170640 is an apocalyptic number.

130170640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130170640 is an abundant number, since it is smaller than the sum of its proper divisors (172476284).

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

130170640 is a wasteful number, since it uses less digits than its factorization.

130170640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627146 (or 1627140 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 130170640 is about 11409.2348560278. The cubic root of 130170640 is about 506.8012531046.

The spelling of 130170640 in words is "one hundred thirty million, one hundred seventy thousand, six hundred forty".