130030020 has 36 divisors (see below), whose sum is σ = 394424940. Its totient is φ = 34674624.

The previous prime is 130030013. The next prime is 130030031. The reversal of 130030020 is 20030031.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 78535044 + 51494976 = 8862^2 + 7176^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×130030020² = 33815612202400800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 130029984 and 130030011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 361015 + ... + 361374.

Almost surely, 2^130030020 is an apocalyptic number.

130030020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130030020 is an abundant number, since it is smaller than the sum of its proper divisors (264394920).

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

130030020 is a wasteful number, since it uses less digits than its factorization.

130030020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722404 (or 722399 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 130030020 is about 11403.0706390866. The cubic root of 130030020 is about 506.6186925568.

Adding to 130030020 its reverse (20030031), we get a palindrome (150060051).

The spelling of 130030020 in words is "one hundred thirty million, thirty thousand, twenty".