28564925929 has 4 divisors (see below), whose sum is σ = 29229226576. Its totient is φ = 27900625284.

The previous prime is 28564925899. The next prime is 28564925941. The reversal of 28564925929 is 92952946582.

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 not a de Polignac number, because 28564925929 - 2¹⁷ = 28564794857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28564925959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332150259 + ... + 332150344.

It is an arithmetic number, because the mean of its divisors is an integer number (7307306644).

Almost surely, 2^28564925929 is an apocalyptic number.

It is an amenable number.

28564925929 is a deficient number, since it is larger than the sum of its proper divisors (664300647).

28564925929 is an equidigital number, since it uses as much as digits as its factorization.

28564925929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664300646.

The product of its digits is 27993600, while the sum is 61.

The spelling of 28564925929 in words is "twenty-eight billion, five hundred sixty-four million, nine hundred twenty-five thousand, nine hundred twenty-nine".