28806472312 has 32 divisors (see below), whose sum is σ = 54734803200. Its totient is φ = 14211798624.

The previous prime is 28806472309. The next prime is 28806472351. The reversal of 28806472312 is 21327460882.

It is a congruent 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, 101793 + ... + 260719.

It is an arithmetic number, because the mean of its divisors is an integer number (1710462600).

Almost surely, 2^28806472312 is an apocalyptic number.

It is an amenable number.

28806472312 is a deficient number, since it is larger than the sum of its proper divisors (25928330888).

28806472312 is a wasteful number, since it uses less digits than its factorization.

28806472312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159235 (or 159231 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 43.

The spelling of 28806472312 in words is "twenty-eight billion, eight hundred six million, four hundred seventy-two thousand, three hundred twelve".