28443570467 has 4 divisors (see below), whose sum is σ = 30631537440. Its totient is φ = 26255603496.

The previous prime is 28443570457. The next prime is 28443570521. The reversal of 28443570467 is 76407534482.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28443570467 - 2²⁴ = 28426793251 is a prime.

It is a super-2 number, since 2×28443570467² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28443570457) 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, 1093983467 + ... + 1093983492.

It is an arithmetic number, because the mean of its divisors is an integer number (7657884360).

Almost surely, 2^28443570467 is an apocalyptic number.

28443570467 is a deficient number, since it is larger than the sum of its proper divisors (2187966973).

28443570467 is a wasteful number, since it uses less digits than its factorization.

28443570467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2187966972.

The product of its (nonzero) digits is 4515840, while the sum is 50.

The spelling of 28443570467 in words is "twenty-eight billion, four hundred forty-three million, five hundred seventy thousand, four hundred sixty-seven".