28577249 has 2 divisors, whose sum is σ = 28577250. Its totient is φ = 28577248.

The previous prime is 28577191. The next prime is 28577303. The reversal of 28577249 is 94277582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19963024 + 8614225 = 4468^2 + 2935^2 .

It is a cyclic number.

It is not a de Polignac number, because 28577249 - 2⁸ = 28576993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28573249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14288624 + 14288625.

It is an arithmetic number, because the mean of its divisors is an integer number (14288625).

Almost surely, 2^28577249 is an apocalyptic number.

It is an amenable number.

28577249 is a deficient number, since it is larger than the sum of its proper divisors (1).

28577249 is an equidigital number, since it uses as much as digits as its factorization.

28577249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 44.

The square root of 28577249 is about 5345.7692617621. The cubic root of 28577249 is about 305.7314666091.

The spelling of 28577249 in words is "twenty-eight million, five hundred seventy-seven thousand, two hundred forty-nine".