28366237 has 2 divisors, whose sum is σ = 28366238. Its totient is φ = 28366236.

The previous prime is 28366213. The next prime is 28366243. The reversal of 28366237 is 73266382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24940036 + 3426201 = 4994^2 + 1851^2 .

It is a cyclic number.

It is not a de Polignac number, because 28366237 - 2¹⁵ = 28333469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28366196 and 28366205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28366937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14183118 + 14183119.

It is an arithmetic number, because the mean of its divisors is an integer number (14183119).

Almost surely, 2^28366237 is an apocalyptic number.

It is an amenable number.

28366237 is a deficient number, since it is larger than the sum of its proper divisors (1).

28366237 is an equidigital number, since it uses as much as digits as its factorization.

28366237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 37.

The square root of 28366237 is about 5325.9963387145. The cubic root of 28366237 is about 304.9771083778.

The spelling of 28366237 in words is "twenty-eight million, three hundred sixty-six thousand, two hundred thirty-seven".