28237093 has 2 divisors, whose sum is σ = 28237094. Its totient is φ = 28237092.

The previous prime is 28237091. The next prime is 28237129. The reversal of 28237093 is 39073282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23493409 + 4743684 = 4847^2 + 2178^2 .

It is a cyclic number.

It is not a de Polignac number, because 28237093 - 2¹ = 28237091 is a prime.

Together with 28237091, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28237091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14118546 + 14118547.

It is an arithmetic number, because the mean of its divisors is an integer number (14118547).

Almost surely, 2^28237093 is an apocalyptic number.

It is an amenable number.

28237093 is a deficient number, since it is larger than the sum of its proper divisors (1).

28237093 is an equidigital number, since it uses as much as digits as its factorization.

28237093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 28237093 is about 5313.8585792247. The cubic root of 28237093 is about 304.5135774246.

The spelling of 28237093 in words is "twenty-eight million, two hundred thirty-seven thousand, ninety-three".