130000020 has 96 divisors (see below), whose sum is σ = 387773568. Its totient is φ = 32428032.

The previous prime is 130000009. The next prime is 130000027. The reversal of 130000020 is 20000031.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a junction number, because it is equal to n+sod(n) for n = 129999963 and 130000008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130000027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 237387 + ... + 237933.

It is an arithmetic number, because the mean of its divisors is an integer number (4039308).

Almost surely, 2^130000020 is an apocalyptic number.

130000020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 130000020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193886784).

130000020 is an abundant number, since it is smaller than the sum of its proper divisors (257773548).

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

130000020 is a wasteful number, since it uses less digits than its factorization.

130000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809 (or 807 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 6.

The square root of 130000020 is about 11401.7551280494. The cubic root of 130000020 is about 506.5797278885.

Adding to 130000020 its reverse (20000031), we get a palindrome (150000051).

The spelling of 130000020 in words is "one hundred thirty million, twenty", and thus it is an aban number.