28441819 has 16 divisors (see below), whose sum is σ = 33384960. Its totient is φ = 23728320.

The previous prime is 28441813. The next prime is 28441873. The reversal of 28441819 is 91814482.

It is not a de Polignac number, because 28441819 - 2⁷ = 28441691 is a prime.

It is a super-2 number, since 2×28441819² = 1617874136057522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28441813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43912 + ... + 44554.

It is an arithmetic number, because the mean of its divisors is an integer number (2086560).

Almost surely, 2^28441819 is an apocalyptic number.

28441819 is a deficient number, since it is larger than the sum of its proper divisors (4943141).

28441819 is an equidigital number, since it uses as much as digits as its factorization.

28441819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810.

The product of its digits is 18432, while the sum is 37.

The square root of 28441819 is about 5333.0871922368. The cubic root of 28441819 is about 305.2477392347.

The spelling of 28441819 in words is "twenty-eight million, four hundred forty-one thousand, eight hundred nineteen".