130023938 has 18 divisors (see below), whose sum is σ = 214671177. Its totient is φ = 59021160.

The previous prime is 130023923. The next prime is 130023961. The reversal of 130023938 is 839320031.

It can be written as a sum of positive squares in 2 ways, for example, as 83960569 + 46063369 = 9163^2 + 6787^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=8063.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 130023938.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 177020 + ... + 177752.

Almost surely, 2^130023938 is an apocalyptic number.

130023938 is a deficient number, since it is larger than the sum of its proper divisors (84647239).

130023938 is an frugal number, since it uses more digits than its factorization.

130023938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490 (or 746 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 130023938 is about 11402.8039534143. The cubic root of 130023938 is about 506.6107936041.

Adding to 130023938 its reverse (839320031), we get a palindrome (969343969).

The spelling of 130023938 in words is "one hundred thirty million, twenty-three thousand, nine hundred thirty-eight".