28976237 has 2 divisors, whose sum is σ = 28976238. Its totient is φ = 28976236.

The previous prime is 28976203. The next prime is 28976239. The reversal of 28976237 is 73267982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28366276 + 609961 = 5326^2 + 781^2 .

It is a cyclic number.

It is not a de Polignac number, because 28976237 - 2⁸ = 28975981 is a prime.

Together with 28976239, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28976239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14488118 + 14488119.

It is an arithmetic number, because the mean of its divisors is an integer number (14488119).

Almost surely, 2^28976237 is an apocalyptic number.

It is an amenable number.

28976237 is a deficient number, since it is larger than the sum of its proper divisors (1).

28976237 is an equidigital number, since it uses as much as digits as its factorization.

28976237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 44.

The square root of 28976237 is about 5382.9580158125. The cubic root of 28976237 is about 307.1477430112.

The spelling of 28976237 in words is "twenty-eight million, nine hundred seventy-six thousand, two hundred thirty-seven".