28823023 has 4 divisors (see below), whose sum is σ = 29078208. Its totient is φ = 28567840.

The previous prime is 28823021. The next prime is 28823051. The reversal of 28823023 is 32032882.

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 28823023 - 2¹ = 28823021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28822982 and 28823000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28823021) 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, 127423 + ... + 127648.

It is an arithmetic number, because the mean of its divisors is an integer number (7269552).

Almost surely, 2^28823023 is an apocalyptic number.

28823023 is a deficient number, since it is larger than the sum of its proper divisors (255185).

28823023 is a wasteful number, since it uses less digits than its factorization.

28823023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255184.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 28823023 is about 5368.7077588559. The cubic root of 28823023 is about 306.6054305634.

The spelling of 28823023 in words is "twenty-eight million, eight hundred twenty-three thousand, twenty-three".