28874323 has 4 divisors (see below), whose sum is σ = 28926720. Its totient is φ = 28821928.

The previous prime is 28874317. The next prime is 28874327. The reversal of 28874323 is 32347882.

It is a happy number.

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 28874323 - 2⁹ = 28873811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28874327) 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, 25363 + ... + 26476.

It is an arithmetic number, because the mean of its divisors is an integer number (7231680).

Almost surely, 2^28874323 is an apocalyptic number.

28874323 is a deficient number, since it is larger than the sum of its proper divisors (52397).

28874323 is an equidigital number, since it uses as much as digits as its factorization.

28874323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52396.

The product of its digits is 64512, while the sum is 37.

The square root of 28874323 is about 5373.4833209009. The cubic root of 28874323 is about 306.7872243127.

The spelling of 28874323 in words is "twenty-eight million, eight hundred seventy-four thousand, three hundred twenty-three".