28492249 has 2 divisors, whose sum is σ = 28492250. Its totient is φ = 28492248.

The previous prime is 28492213. The next prime is 28492271. The reversal of 28492249 is 94229482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24571849 + 3920400 = 4957^2 + 1980^2 .

It is a cyclic number.

It is not a de Polignac number, because 28492249 - 2¹¹ = 28490201 is a prime.

It is not a weakly prime, because it can be changed into another prime (28492279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14246124 + 14246125.

It is an arithmetic number, because the mean of its divisors is an integer number (14246125).

Almost surely, 2^28492249 is an apocalyptic number.

It is an amenable number.

28492249 is a deficient number, since it is larger than the sum of its proper divisors (1).

28492249 is an equidigital number, since it uses as much as digits as its factorization.

28492249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 40.

The square root of 28492249 is about 5337.8131289883. The cubic root of 28492249 is about 305.4280436228.

The spelling of 28492249 in words is "twenty-eight million, four hundred ninety-two thousand, two hundred forty-nine".