28944211 has 2 divisors, whose sum is σ = 28944212. Its totient is φ = 28944210.

The previous prime is 28944199. The next prime is 28944229. The reversal of 28944211 is 11244982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28944211 - 2⁹ = 28943699 is a prime.

It is not a weakly prime, because it can be changed into another prime (28944241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14472105 + 14472106.

It is an arithmetic number, because the mean of its divisors is an integer number (14472106).

Almost surely, 2^28944211 is an apocalyptic number.

28944211 is a deficient number, since it is larger than the sum of its proper divisors (1).

28944211 is an equidigital number, since it uses as much as digits as its factorization.

28944211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 31.

The square root of 28944211 is about 5379.9824349156. The cubic root of 28944211 is about 307.0345428988.

The spelling of 28944211 in words is "twenty-eight million, nine hundred forty-four thousand, two hundred eleven".