28324379 has 4 divisors (see below), whose sum is σ = 28449384. Its totient is φ = 28199376.

The previous prime is 28324349. The next prime is 28324381. The reversal of 28324379 is 97342382.

It is a happy number.

28324379 is nontrivially palindromic in base 13.

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 28324379 - 2⁸ = 28324123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28324349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62162 + ... + 62615.

It is an arithmetic number, because the mean of its divisors is an integer number (7112346).

Almost surely, 2^28324379 is an apocalyptic number.

28324379 is a deficient number, since it is larger than the sum of its proper divisors (125005).

28324379 is a wasteful number, since it uses less digits than its factorization.

28324379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125004.

The product of its digits is 72576, while the sum is 38.

The square root of 28324379 is about 5322.0652946013. The cubic root of 28324379 is about 304.8270236590.

The spelling of 28324379 in words is "twenty-eight million, three hundred twenty-four thousand, three hundred seventy-nine".