23004045438 has 24 divisors (see below), whose sum is σ = 50570878344. Its totient is φ = 6970922640.

The previous prime is 23004045433. The next prime is 23004045461. The reversal of 23004045438 is 83454040032.

It is a super-2 number, since 2×23004045438² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 23004045399 and 23004045408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23004045433) 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 11 ways as a sum of consecutive naturals, for example, 15842281 + ... + 15843732.

It is an arithmetic number, because the mean of its divisors is an integer number (2107119931).

Almost surely, 2^23004045438 is an apocalyptic number.

23004045438 is an abundant number, since it is smaller than the sum of its proper divisors (27566832906).

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

23004045438 is a wasteful number, since it uses less digits than its factorization.

23004045438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31686040 (or 31686029 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 33.

The spelling of 23004045438 in words is "twenty-three billion, four million, forty-five thousand, four hundred thirty-eight".