28792344789 has 12 divisors (see below), whose sum is σ = 44788092076. Its totient is φ = 17718365952.

The previous prime is 28792344781. The next prime is 28792344799. The reversal of 28792344789 is 98744329782.

28792344789 is a `hidden beast` number, since 28 + 7 + 92 + 3 + 447 + 89 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8474123025 + 20318221764 = 92055^2 + 142542^2 .

It is not a de Polignac number, because 28792344789 - 2³ = 28792344781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28792344781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123044092 + ... + 123044325.

Almost surely, 2^28792344789 is an apocalyptic number.

It is an amenable number.

28792344789 is a deficient number, since it is larger than the sum of its proper divisors (15995747287).

28792344789 is a wasteful number, since it uses less digits than its factorization.

28792344789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246088436 (or 246088433 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 63.

The spelling of 28792344789 in words is "twenty-eight billion, seven hundred ninety-two million, three hundred forty-four thousand, seven hundred eighty-nine".