28422823 has 8 divisors (see below), whose sum is σ = 33392016. Its totient is φ = 23851200.

The previous prime is 28422811. The next prime is 28422829. The reversal of 28422823 is 32822482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28422823 - 2¹⁷ = 28291751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28422829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99238 + ... + 99523.

It is an arithmetic number, because the mean of its divisors is an integer number (4174002).

Almost surely, 2^28422823 is an apocalyptic number.

28422823 is a deficient number, since it is larger than the sum of its proper divisors (4969193).

28422823 is a wasteful number, since it uses less digits than its factorization.

28422823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198785.

The product of its digits is 12288, while the sum is 31.

The square root of 28422823 is about 5331.3059375729. The cubic root of 28422823 is about 305.1797668188.

It can be divided in two parts, 2842 and 2823, that added together give a palindrome (5665).

The spelling of 28422823 in words is "twenty-eight million, four hundred twenty-two thousand, eight hundred twenty-three".