28224049 has 6 divisors (see below), whose sum is σ = 32832114. Its totient is φ = 24192000.

The previous prime is 28224041. The next prime is 28224061. The reversal of 28224049 is 94042282.

It can be written as a sum of positive squares in only one way, i.e., 22391824 + 5832225 = 4732^2 + 2415^2 .

It is not a de Polignac number, because 28224049 - 2³ = 28224041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28224049.

It is not an unprimeable number, because it can be changed into a prime (28224041) 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 5 ways as a sum of consecutive naturals, for example, 287952 + ... + 288049.

It is an arithmetic number, because the mean of its divisors is an integer number (5472019).

Almost surely, 2^28224049 is an apocalyptic number.

It is an amenable number.

28224049 is a deficient number, since it is larger than the sum of its proper divisors (4608065).

28224049 is an equidigital number, since it uses as much as digits as its factorization.

28224049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576015 (or 576008 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 28224049 is about 5312.6310807358. The cubic root of 28224049 is about 304.4666806366.

The spelling of 28224049 in words is "twenty-eight million, two hundred twenty-four thousand, forty-nine".