28443570505 has 8 divisors (see below), whose sum is σ = 39008325312. Its totient is φ = 19504162608.

The previous prime is 28443570457. The next prime is 28443570521. The reversal of 28443570505 is 50507534482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28443570505 - 2¹⁵ = 28443537737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406336687 + ... + 406336756.

It is an arithmetic number, because the mean of its divisors is an integer number (4876040664).

Almost surely, 2^28443570505 is an apocalyptic number.

It is an amenable number.

28443570505 is a deficient number, since it is larger than the sum of its proper divisors (10564754807).

28443570505 is an equidigital number, since it uses as much as digits as its factorization.

28443570505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812673455.

The product of its (nonzero) digits is 672000, while the sum is 43.

The spelling of 28443570505 in words is "twenty-eight billion, four hundred forty-three million, five hundred seventy thousand, five hundred five".