28045323 has 12 divisors (see below), whose sum is σ = 41372448. Its totient is φ = 18298800.

The previous prime is 28045301. The next prime is 28045327. The reversal of 28045323 is 32354082.

It is not a de Polignac number, because 28045323 - 2¹⁸ = 27783179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28045327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32728 + ... + 33573.

It is an arithmetic number, because the mean of its divisors is an integer number (3447704).

Almost surely, 2^28045323 is an apocalyptic number.

28045323 is a deficient number, since it is larger than the sum of its proper divisors (13327125).

28045323 is a wasteful number, since it uses less digits than its factorization.

28045323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66354 (or 66351 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 28045323 is about 5295.7835114362. The cubic root of 28045323 is about 303.8226509144.

The spelling of 28045323 in words is "twenty-eight million, forty-five thousand, three hundred twenty-three".