28443570468 has 24 divisors (see below), whose sum is σ = 70272351072. Its totient is φ = 8923473024.

The previous prime is 28443570457. The next prime is 28443570521. The reversal of 28443570468 is 86407534482.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 28443570468.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 69714430 + ... + 69714837.

It is an arithmetic number, because the mean of its divisors is an integer number (2928014628).

Almost surely, 2^28443570468 is an apocalyptic number.

It is an amenable number.

28443570468 is an abundant number, since it is smaller than the sum of its proper divisors (41828780604).

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

28443570468 is a wasteful number, since it uses less digits than its factorization.

28443570468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139429291 (or 139429289 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 51.

It can be divided in two parts, 284435 and 70468, that added together give a triangular number (354903 = T₈₄₂).

The spelling of 28443570468 in words is "twenty-eight billion, four hundred forty-three million, five hundred seventy thousand, four hundred sixty-eight".