23130020 has 12 divisors (see below), whose sum is σ = 48573084. Its totient is φ = 9252000.

The previous prime is 23130007. The next prime is 23130067. The reversal of 23130020 is 2003132.

It can be written as a sum of positive squares in 2 ways, for example, as 17522596 + 5607424 = 4186^2 + 2368^2 .

It is a junction number, because it is equal to n+sod(n) for n = 23129983 and 23130010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 578231 + ... + 578270.

It is an arithmetic number, because the mean of its divisors is an integer number (4047757).

Almost surely, 2^23130020 is an apocalyptic number.

23130020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23130020 is an abundant number, since it is smaller than the sum of its proper divisors (25443064).

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

23130020 is a wasteful number, since it uses less digits than its factorization.

23130020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156510 (or 1156508 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 23130020 is about 4809.3679418402. The cubic root of 23130020 is about 284.9215748099.

Adding to 23130020 its reverse (2003132), we get a palindrome (25133152).

The spelling of 23130020 in words is "twenty-three million, one hundred thirty thousand, twenty".