130169840 has 20 divisors (see below), whose sum is σ = 302645064. Its totient is φ = 52067904.

The previous prime is 130169839. The next prime is 130169849. The reversal of 130169840 is 48961031.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 130169797 and 130169806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130169849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 813482 + ... + 813641.

Almost surely, 2^130169840 is an apocalyptic number.

130169840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130169840 is an abundant number, since it is smaller than the sum of its proper divisors (172475224).

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

130169840 is a wasteful number, since it uses less digits than its factorization.

130169840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627136 (or 1627130 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 130169840 is about 11409.1997966553. The cubic root of 130169840 is about 506.8002148730.

The spelling of 130169840 in words is "one hundred thirty million, one hundred sixty-nine thousand, eight hundred forty".