28033023 has 4 divisors (see below), whose sum is σ = 37377368. Its totient is φ = 18688680.

The previous prime is 28033007. The next prime is 28033043. The reversal of 28033023 is 32033082.

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

It is not a de Polignac number, because 28033023 - 2⁴ = 28033007 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28033043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4672168 + ... + 4672173.

It is an arithmetic number, because the mean of its divisors is an integer number (9344342).

Almost surely, 2^28033023 is an apocalyptic number.

28033023 is a deficient number, since it is larger than the sum of its proper divisors (9344345).

28033023 is an equidigital number, since it uses as much as digits as its factorization.

28033023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9344344.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 28033023 is about 5294.6220828308. The cubic root of 28033023 is about 303.7782279987.

The spelling of 28033023 in words is "twenty-eight million, thirty-three thousand, twenty-three".