130021980 has 48 divisors (see below), whose sum is σ = 397160064. Its totient is φ = 31520320.

The previous prime is 130021963. The next prime is 130021987. The reversal of 130021980 is 89120031.

130021980 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 130021980.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130021987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97842 + ... + 99161.

It is an arithmetic number, because the mean of its divisors is an integer number (8274168).

Almost surely, 2^130021980 is an apocalyptic number.

130021980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130021980 is an abundant number, since it is smaller than the sum of its proper divisors (267138084).

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

130021980 is a wasteful number, since it uses less digits than its factorization.

130021980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197026 (or 197024 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 130021980 is about 11402.7180970153. The cubic root of 130021980 is about 506.6082506136.

The spelling of 130021980 in words is "one hundred thirty million, twenty-one thousand, nine hundred eighty".