28013470794 has 24 divisors (see below), whose sum is σ = 60727656132. Its totient is φ = 9332930880.

The previous prime is 28013470783. The next prime is 28013470799. The reversal of 28013470794 is 49707431082.

28013470794 is a `hidden beast` number, since 2 + 80 + 13 + 470 + 7 + 94 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 28001671569 + 11799225 = 167337^2 + 3435^2 .

It is not an unprimeable number, because it can be changed into a prime (28013470799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 372337 + ... + 441204.

Almost surely, 2^28013470794 is an apocalyptic number.

28013470794 is an abundant number, since it is smaller than the sum of its proper divisors (32714185338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28013470794 is a wasteful number, since it uses less digits than its factorization.

28013470794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815462 (or 815459 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 28013470794 in words is "twenty-eight billion, thirteen million, four hundred seventy thousand, seven hundred ninety-four".