28786324484 has 24 divisors (see below), whose sum is σ = 50472999360. Its totient is φ = 14365495584.

The previous prime is 28786324477. The next prime is 28786324487. The reversal of 28786324484 is 48442368782.

It is not an unprimeable number, because it can be changed into a prime (28786324487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7171262 + ... + 7175274.

It is an arithmetic number, because the mean of its divisors is an integer number (2103041640).

Almost surely, 2^28786324484 is an apocalyptic number.

It is an amenable number.

28786324484 is a deficient number, since it is larger than the sum of its proper divisors (21686674876).

28786324484 is a wasteful number, since it uses less digits than its factorization.

28786324484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7019 (or 7017 counting only the distinct ones).

The product of its digits is 16515072, while the sum is 56.

The spelling of 28786324484 in words is "twenty-eight billion, seven hundred eighty-six million, three hundred twenty-four thousand, four hundred eighty-four".