28469457973 has 4 divisors (see below), whose sum is σ = 31057590528. Its totient is φ = 25881325420.

The previous prime is 28469457967. The next prime is 28469457977. The reversal of 28469457973 is 37975496482.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28469457973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28469457977) 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 3 ways as a sum of consecutive naturals, for example, 1294066261 + ... + 1294066282.

It is an arithmetic number, because the mean of its divisors is an integer number (7764397632).

Almost surely, 2^28469457973 is an apocalyptic number.

It is an amenable number.

28469457973 is a deficient number, since it is larger than the sum of its proper divisors (2588132555).

28469457973 is a wasteful number, since it uses less digits than its factorization.

28469457973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2588132554.

The product of its digits is 91445760, while the sum is 64.

The spelling of 28469457973 in words is "twenty-eight billion, four hundred sixty-nine million, four hundred fifty-seven thousand, nine hundred seventy-three".