28469379 has 4 divisors (see below), whose sum is σ = 37959176. Its totient is φ = 18979584.

The previous prime is 28469359. The next prime is 28469381. The reversal of 28469379 is 97396482.

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

It is not a de Polignac number, because 28469379 - 2⁵ = 28469347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28469359) 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, 4744894 + ... + 4744899.

It is an arithmetic number, because the mean of its divisors is an integer number (9489794).

Almost surely, 2^28469379 is an apocalyptic number.

28469379 is a deficient number, since it is larger than the sum of its proper divisors (9489797).

28469379 is an equidigital number, since it uses as much as digits as its factorization.

28469379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9489796.

The product of its digits is 653184, while the sum is 48.

The square root of 28469379 is about 5335.6704358497. The cubic root of 28469379 is about 305.3463019870.

The spelling of 28469379 in words is "twenty-eight million, four hundred sixty-nine thousand, three hundred seventy-nine".