28843261 has 2 divisors, whose sum is σ = 28843262. Its totient is φ = 28843260.

The previous prime is 28843231. The next prime is 28843291. The reversal of 28843261 is 16234882.

It is a balanced prime because it is at equal distance from previous prime (28843231) and next prime (28843291).

It can be written as a sum of positive squares in only one way, i.e., 26936100 + 1907161 = 5190^2 + 1381^2 .

It is a cyclic number.

It is not a de Polignac number, because 28843261 - 2⁵ = 28843229 is a prime.

It is a super-2 number, since 2×28843261² = 1663867410228242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28843201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14421630 + 14421631.

It is an arithmetic number, because the mean of its divisors is an integer number (14421631).

Almost surely, 2^28843261 is an apocalyptic number.

It is an amenable number.

28843261 is a deficient number, since it is larger than the sum of its proper divisors (1).

28843261 is an equidigital number, since it uses as much as digits as its factorization.

28843261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 34.

The square root of 28843261 is about 5370.5922392228. The cubic root of 28843261 is about 306.6771744719.

The spelling of 28843261 in words is "twenty-eight million, eight hundred forty-three thousand, two hundred sixty-one".