43218023028 has 12 divisors (see below), whose sum is σ = 100842053760. Its totient is φ = 14406007672.

The previous prime is 43218023027. The next prime is 43218023039. The reversal of 43218023028 is 82032081234.

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 43218023028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43218023021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1800750948 + ... + 1800750971.

It is an arithmetic number, because the mean of its divisors is an integer number (8403504480).

Almost surely, 2^43218023028 is an apocalyptic number.

It is an amenable number.

43218023028 is an abundant number, since it is smaller than the sum of its proper divisors (57624030732).

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

43218023028 is a wasteful number, since it uses less digits than its factorization.

43218023028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3601501926 (or 3601501924 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The spelling of 43218023028 in words is "forty-three billion, two hundred eighteen million, twenty-three thousand, twenty-eight".