28390847276 has 24 divisors (see below), whose sum is σ = 54809712720. Its totient is φ = 12759929600.

The previous prime is 28390847201. The next prime is 28390847279. The reversal of 28390847276 is 67274809382.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28390847279) by changing a digit.

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, 3621065 + ... + 3628896.

It is an arithmetic number, because the mean of its divisors is an integer number (2283738030).

Almost surely, 2^28390847276 is an apocalyptic number.

It is an amenable number.

28390847276 is a deficient number, since it is larger than the sum of its proper divisors (26418865444).

28390847276 is a wasteful number, since it uses less digits than its factorization.

28390847276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7250065 (or 7250063 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 56.

The spelling of 28390847276 in words is "twenty-eight billion, three hundred ninety million, eight hundred forty-seven thousand, two hundred seventy-six".