28372739173 has 12 divisors (see below), whose sum is σ = 29147809408. Its totient is φ = 27612078120.

The previous prime is 28372739167. The next prime is 28372739233. The reversal of 28372739173 is 37193727382.

It is not a de Polignac number, because 28372739173 - 2²⁹ = 27835868261 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28372739173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28372739873) 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, 430828 + ... + 492298.

Almost surely, 2^28372739173 is an apocalyptic number.

It is an amenable number.

28372739173 is a deficient number, since it is larger than the sum of its proper divisors (775070235).

28372739173 is an frugal number, since it uses more digits than its factorization.

28372739173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61704 (or 61621 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 52.

The spelling of 28372739173 in words is "twenty-eight billion, three hundred seventy-two million, seven hundred thirty-nine thousand, one hundred seventy-three".