23440021304 has 32 divisors (see below), whose sum is σ = 50249520480. Its totient is φ = 10041542784.

The previous prime is 23440021301. The next prime is 23440021331. The reversal of 23440021304 is 40312004432.

It is a self number, because there is not a number n which added to its sum of digits gives 23440021304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23440021301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50594 + ... + 222350.

It is an arithmetic number, because the mean of its divisors is an integer number (1570297515).

Almost surely, 2^23440021304 is an apocalyptic number.

It is an amenable number.

23440021304 is an abundant number, since it is smaller than the sum of its proper divisors (26809499176).

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

23440021304 is a wasteful number, since it uses less digits than its factorization.

23440021304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174207 (or 174203 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 23440021304 its reverse (40312004432), we get a palindrome (63752025736).

The spelling of 23440021304 in words is "twenty-three billion, four hundred forty million, twenty-one thousand, three hundred four".