28662917 has 2 divisors, whose sum is σ = 28662918. Its totient is φ = 28662916.

The previous prime is 28662911. The next prime is 28662923. The reversal of 28662917 is 71926682.

It is a balanced prime because it is at equal distance from previous prime (28662911) and next prime (28662923).

It can be written as a sum of positive squares in only one way, i.e., 27552001 + 1110916 = 5249^2 + 1054^2 .

It is a cyclic number.

It is not a de Polignac number, because 28662917 - 2¹⁶ = 28597381 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28662911) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14331458 + 14331459.

It is an arithmetic number, because the mean of its divisors is an integer number (14331459).

Almost surely, 2^28662917 is an apocalyptic number.

It is an amenable number.

28662917 is a deficient number, since it is larger than the sum of its proper divisors (1).

28662917 is an equidigital number, since it uses as much as digits as its factorization.

28662917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 41.

The square root of 28662917 is about 5353.7759572100. The cubic root of 28662917 is about 306.0366659753.

The spelling of 28662917 in words is "twenty-eight million, six hundred sixty-two thousand, nine hundred seventeen".