28963169 has 2 divisors, whose sum is σ = 28963170. Its totient is φ = 28963168.

The previous prime is 28963147. The next prime is 28963171. The reversal of 28963169 is 96136982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28944400 + 18769 = 5380^2 + 137^2 .

It is a cyclic number.

It is not a de Polignac number, because 28963169 - 2¹⁶ = 28897633 is a prime.

It is a super-2 number, since 2×28963169² = 1677730317045122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 28963171, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (28963469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14481584 + 14481585.

It is an arithmetic number, because the mean of its divisors is an integer number (14481585).

Almost surely, 2^28963169 is an apocalyptic number.

It is an amenable number.

28963169 is a deficient number, since it is larger than the sum of its proper divisors (1).

28963169 is an equidigital number, since it uses as much as digits as its factorization.

28963169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 44.

The square root of 28963169 is about 5381.7440481688. The cubic root of 28963169 is about 307.1015625237.

The spelling of 28963169 in words is "twenty-eight million, nine hundred sixty-three thousand, one hundred sixty-nine".