130820540 has 24 divisors (see below), whose sum is σ = 276415440. Its totient is φ = 52005888.

The previous prime is 130820519. The next prime is 130820561. The reversal of 130820540 is 45028031.

It is an interprime number because it is at equal distance from previous prime (130820519) and next prime (130820561).

It is a super-2 number, since 2×130820540² = 34228027371783200, which contains 22 as substring.

It is a congruent number.

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, 16805 + ... + 23324.

It is an arithmetic number, because the mean of its divisors is an integer number (11517310).

Almost surely, 2^130820540 is an apocalyptic number.

130820540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130820540 is an abundant number, since it is smaller than the sum of its proper divisors (145594900).

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

130820540 is a wasteful number, since it uses less digits than its factorization.

130820540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40301 (or 40299 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 130820540 is about 11437.6807089549. The cubic root of 130820540 is about 507.6432850290.

Adding to 130820540 its reverse (45028031), we get a palindrome (175848571).

The spelling of 130820540 in words is "one hundred thirty million, eight hundred twenty thousand, five hundred forty".