28796923 has 4 divisors (see below), whose sum is σ = 29725888. Its totient is φ = 27867960.

The previous prime is 28796921. The next prime is 28796953. The reversal of 28796923 is 32969782.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32969782 = 2 ⋅16484891.

It is a cyclic number.

It is not a de Polignac number, because 28796923 - 2¹ = 28796921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28796921) 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, 464436 + ... + 464497.

It is an arithmetic number, because the mean of its divisors is an integer number (7431472).

Almost surely, 2^28796923 is an apocalyptic number.

28796923 is a deficient number, since it is larger than the sum of its proper divisors (928965).

28796923 is an equidigital number, since it uses as much as digits as its factorization.

28796923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928964.

The product of its digits is 326592, while the sum is 46.

The square root of 28796923 is about 5366.2764557932. The cubic root of 28796923 is about 306.5128562069.

The spelling of 28796923 in words is "twenty-eight million, seven hundred ninety-six thousand, nine hundred twenty-three".