28814249 has 2 divisors, whose sum is σ = 28814250. Its totient is φ = 28814248.

The previous prime is 28814207. The next prime is 28814281. The reversal of 28814249 is 94241882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20070400 + 8743849 = 4480^2 + 2957^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28814249 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28814299) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14407124 + 14407125.

It is an arithmetic number, because the mean of its divisors is an integer number (14407125).

Almost surely, 2^28814249 is an apocalyptic number.

It is an amenable number.

28814249 is a deficient number, since it is larger than the sum of its proper divisors (1).

28814249 is an equidigital number, since it uses as much as digits as its factorization.

28814249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36864, while the sum is 38.

The square root of 28814249 is about 5367.8905540259. The cubic root of 28814249 is about 306.5743162112.

The spelling of 28814249 in words is "twenty-eight million, eight hundred fourteen thousand, two hundred forty-nine".