28455323 has 4 divisors (see below), whose sum is σ = 30644208. Its totient is φ = 26266440.

The previous prime is 28455319. The next prime is 28455337. The reversal of 28455323 is 32355482.

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

It is a cyclic number.

It is not a de Polignac number, because 28455323 - 2² = 28455319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28455323.

It is not an unprimeable number, because it can be changed into a prime (28455313) 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 3 ways as a sum of consecutive naturals, for example, 1094423 + ... + 1094448.

It is an arithmetic number, because the mean of its divisors is an integer number (7661052).

Almost surely, 2^28455323 is an apocalyptic number.

28455323 is a deficient number, since it is larger than the sum of its proper divisors (2188885).

28455323 is a wasteful number, since it uses less digits than its factorization.

28455323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188884.

The product of its digits is 28800, while the sum is 32.

The square root of 28455323 is about 5334.3531004237. The cubic root of 28455323 is about 305.2960415047.

The spelling of 28455323 in words is "twenty-eight million, four hundred fifty-five thousand, three hundred twenty-three".