28927907423 has 4 divisors (see below), whose sum is σ = 28934037048. Its totient is φ = 28921777800.

The previous prime is 28927907413. The next prime is 28927907429. The reversal of 28927907423 is 32470972982.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28927907423 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 (28927907429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3057728 + ... + 3067173.

It is an arithmetic number, because the mean of its divisors is an integer number (7233509262).

Almost surely, 2^28927907423 is an apocalyptic number.

28927907423 is a deficient number, since it is larger than the sum of its proper divisors (6129625).

28927907423 is an equidigital number, since it uses as much as digits as its factorization.

28927907423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6129624.

The product of its (nonzero) digits is 3048192, while the sum is 53.

The spelling of 28927907423 in words is "twenty-eight billion, nine hundred twenty-seven million, nine hundred seven thousand, four hundred twenty-three".