28469940172 has 12 divisors (see below), whose sum is σ = 49839368040. Its totient is φ = 14230120736.

The previous prime is 28469940167. The next prime is 28469940193. The reversal of 28469940172 is 27104996482.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1199113 + ... + 1222624.

It is an arithmetic number, because the mean of its divisors is an integer number (4153280670).

Almost surely, 2^28469940172 is an apocalyptic number.

It is an amenable number.

28469940172 is a deficient number, since it is larger than the sum of its proper divisors (21369427868).

28469940172 is a wasteful number, since it uses less digits than its factorization.

28469940172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2424680 (or 2424678 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 28469940172 in words is "twenty-eight billion, four hundred sixty-nine million, nine hundred forty thousand, one hundred seventy-two".