23130444 has 12 divisors (see below), whose sum is σ = 53971064. Its totient is φ = 7710144.

The previous prime is 23130409. The next prime is 23130449. The reversal of 23130444 is 44403132.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 23130444.

It is not an unprimeable number, because it can be changed into a prime (23130449) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 963757 + ... + 963780.

Almost surely, 2^23130444 is an apocalyptic number.

It is an amenable number.

23130444 is an abundant number, since it is smaller than the sum of its proper divisors (30840620).

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

23130444 is a wasteful number, since it uses less digits than its factorization.

23130444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1927544 (or 1927542 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 23130444 is about 4809.4120222747. The cubic root of 23130444 is about 284.9233157798.

Adding to 23130444 its reverse (44403132), we get a palindrome (67533576).

The spelling of 23130444 in words is "twenty-three million, one hundred thirty thousand, four hundred forty-four".