28499227 has 2 divisors, whose sum is σ = 28499228. Its totient is φ = 28499226.

The previous prime is 28499209. The next prime is 28499267. The reversal of 28499227 is 72299482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28499227 - 2¹¹ = 28497179 is a prime.

It is not a weakly prime, because it can be changed into another prime (28499267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14249613 + 14249614.

It is an arithmetic number, because the mean of its divisors is an integer number (14249614).

Almost surely, 2^28499227 is an apocalyptic number.

28499227 is a deficient number, since it is larger than the sum of its proper divisors (1).

28499227 is an equidigital number, since it uses as much as digits as its factorization.

28499227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 43.

The square root of 28499227 is about 5338.4667274415. The cubic root of 28499227 is about 305.4529755838.

The spelling of 28499227 in words is "twenty-eight million, four hundred ninety-nine thousand, two hundred twenty-seven".