130623220 has 72 divisors (see below), whose sum is σ = 343673064. Its totient is φ = 41336064.

The previous prime is 130623211. The next prime is 130623239. The reversal of 130623220 is 22326031.

It can be written as a sum of positive squares in 4 ways, for example, as 1073296 + 129549924 = 1036^2 + 11382^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7614 + ... + 17866.

It is an arithmetic number, because the mean of its divisors is an integer number (4773237).

Almost surely, 2^130623220 is an apocalyptic number.

130623220 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 130623220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171836532).

130623220 is an abundant number, since it is smaller than the sum of its proper divisors (213049844).

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

130623220 is a wasteful number, since it uses less digits than its factorization.

130623220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10289 (or 10280 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 130623220 is about 11429.0515791994. The cubic root of 130623220 is about 507.3879261041.

Adding to 130623220 its reverse (22326031), we get a palindrome (152949251).

The spelling of 130623220 in words is "one hundred thirty million, six hundred twenty-three thousand, two hundred twenty".