28837091 has 2 divisors, whose sum is σ = 28837092. Its totient is φ = 28837090.

The previous prime is 28837073. The next prime is 28837093. The reversal of 28837091 is 19073882.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28837091 is a prime.

Together with 28837093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28837093) 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, 14418545 + 14418546.

It is an arithmetic number, because the mean of its divisors is an integer number (14418546).

Almost surely, 2^28837091 is an apocalyptic number.

28837091 is a deficient number, since it is larger than the sum of its proper divisors (1).

28837091 is an equidigital number, since it uses as much as digits as its factorization.

28837091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 28837091 is about 5370.0177839557. The cubic root of 28837091 is about 306.6553053184.

The spelling of 28837091 in words is "twenty-eight million, eight hundred thirty-seven thousand, ninety-one".