28244369 has 2 divisors, whose sum is σ = 28244370. Its totient is φ = 28244368.

The previous prime is 28244353. The next prime is 28244401. The reversal of 28244369 is 96344282.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27457600 + 786769 = 5240^2 + 887^2 .

It is a cyclic number.

It is not a de Polignac number, because 28244369 - 2⁴ = 28244353 is a prime.

It is a super-2 number, since 2×28244369² = 1595488760416322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28244309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14122184 + 14122185.

It is an arithmetic number, because the mean of its divisors is an integer number (14122185).

Almost surely, 2^28244369 is an apocalyptic number.

It is an amenable number.

28244369 is a deficient number, since it is larger than the sum of its proper divisors (1).

28244369 is an equidigital number, since it uses as much as digits as its factorization.

28244369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 38.

The square root of 28244369 is about 5314.5431600468. The cubic root of 28244369 is about 304.5397303824.

The spelling of 28244369 in words is "twenty-eight million, two hundred forty-four thousand, three hundred sixty-nine".