28922911 has 2 divisors, whose sum is σ = 28922912. Its totient is φ = 28922910.

The previous prime is 28922879. The next prime is 28922923. The reversal of 28922911 is 11922982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28922911 - 2⁵ = 28922879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28922941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14461455 + 14461456.

It is an arithmetic number, because the mean of its divisors is an integer number (14461456).

Almost surely, 2^28922911 is an apocalyptic number.

28922911 is a deficient number, since it is larger than the sum of its proper divisors (1).

28922911 is an equidigital number, since it uses as much as digits as its factorization.

28922911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 34.

The square root of 28922911 is about 5378.0025102263. The cubic root of 28922911 is about 306.9592090017.

The spelling of 28922911 in words is "twenty-eight million, nine hundred twenty-two thousand, nine hundred eleven".