28058249 has 2 divisors, whose sum is σ = 28058250. Its totient is φ = 28058248.

The previous prime is 28058221. The next prime is 28058257. The reversal of 28058249 is 94285082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22090000 + 5968249 = 4700^2 + 2443^2 .

It is a cyclic number.

It is not a de Polignac number, because 28058249 - 2¹² = 28054153 is a prime.

It is not a weakly prime, because it can be changed into another prime (28058549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14029124 + 14029125.

It is an arithmetic number, because the mean of its divisors is an integer number (14029125).

Almost surely, 2^28058249 is an apocalyptic number.

It is an amenable number.

28058249 is a deficient number, since it is larger than the sum of its proper divisors (1).

28058249 is an equidigital number, since it uses as much as digits as its factorization.

28058249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 28058249 is about 5297.0037757208. The cubic root of 28058249 is about 303.8693207090.

The spelling of 28058249 in words is "twenty-eight million, fifty-eight thousand, two hundred forty-nine".