12023400444 has 48 divisors (see below), whose sum is σ = 30624604416. Its totient is φ = 3641123200.

The previous prime is 12023400427. The next prime is 12023400449. The reversal of 12023400444 is 44400432021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12023400449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183784 + ... + 240464.

It is an arithmetic number, because the mean of its divisors is an integer number (638012592).

Almost surely, 2^12023400444 is an apocalyptic number.

It is an amenable number.

12023400444 is an abundant number, since it is smaller than the sum of its proper divisors (18601203972).

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

12023400444 is a wasteful number, since it uses less digits than its factorization.

12023400444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58306 (or 58304 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 12023400444 its reverse (44400432021), we get a palindrome (56423832465).

The spelling of 12023400444 in words is "twelve billion, twenty-three million, four hundred thousand, four hundred forty-four".