28470070784 has 20 divisors (see below), whose sum is σ = 56884536984. Its totient is φ = 14235035136.

The previous prime is 28470070771. The next prime is 28470070843. The reversal of 28470070784 is 48707007482.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27802292 + ... + 27803315.

Almost surely, 2^28470070784 is an apocalyptic number.

It is an amenable number.

28470070784 is a deficient number, since it is larger than the sum of its proper divisors (28414466200).

28470070784 is an frugal number, since it uses more digits than its factorization.

28470070784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55605625 (or 55605609 counting only the distinct ones).

The product of its (nonzero) digits is 702464, while the sum is 47.

The spelling of 28470070784 in words is "twenty-eight billion, four hundred seventy million, seventy thousand, seven hundred eighty-four".