28968101 has 2 divisors, whose sum is σ = 28968102. Its totient is φ = 28968100.

The previous prime is 28968091. The next prime is 28968139. The reversal of 28968101 is 10186982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27552001 + 1416100 = 5249^2 + 1190^2 .

It is a cyclic number.

It is not a de Polignac number, because 28968101 - 2²² = 24773797 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28968001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14484050 + 14484051.

It is an arithmetic number, because the mean of its divisors is an integer number (14484051).

Almost surely, 2^28968101 is an apocalyptic number.

It is an amenable number.

28968101 is a deficient number, since it is larger than the sum of its proper divisors (1).

28968101 is an equidigital number, since it uses as much as digits as its factorization.

28968101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 28968101 is about 5382.2022444349. The cubic root of 28968101 is about 307.1189931548.

The spelling of 28968101 in words is "twenty-eight million, nine hundred sixty-eight thousand, one hundred one".