28923079 has 2 divisors, whose sum is σ = 28923080. Its totient is φ = 28923078.

The previous prime is 28923077. The next prime is 28923091. The reversal of 28923079 is 97032982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28923079 - 2¹ = 28923077 is a prime.

Together with 28923077, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28923071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14461539 + 14461540.

It is an arithmetic number, because the mean of its divisors is an integer number (14461540).

Almost surely, 2^28923079 is an apocalyptic number.

28923079 is a deficient number, since it is larger than the sum of its proper divisors (1).

28923079 is an equidigital number, since it uses as much as digits as its factorization.

28923079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 28923079 is about 5378.0181293856. The cubic root of 28923079 is about 306.9598033293.

The spelling of 28923079 in words is "twenty-eight million, nine hundred twenty-three thousand, seventy-nine".