28683937 has 2 divisors, whose sum is σ = 28683938. Its totient is φ = 28683936.

The previous prime is 28683923. The next prime is 28683943. The reversal of 28683937 is 73938682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26584336 + 2099601 = 5156^2 + 1449^2 .

It is a cyclic number.

It is not a de Polignac number, because 28683937 - 2²³ = 20295329 is a prime.

It is not a weakly prime, because it can be changed into another prime (28683997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14341968 + 14341969.

It is an arithmetic number, because the mean of its divisors is an integer number (14341969).

Almost surely, 2^28683937 is an apocalyptic number.

It is an amenable number.

28683937 is a deficient number, since it is larger than the sum of its proper divisors (1).

28683937 is an equidigital number, since it uses as much as digits as its factorization.

28683937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 46.

The square root of 28683937 is about 5355.7386978829. The cubic root of 28683937 is about 306.1114585355. Note that the first 3 decimals are identical.

The spelling of 28683937 in words is "twenty-eight million, six hundred eighty-three thousand, nine hundred thirty-seven".