28664201 has 2 divisors, whose sum is σ = 28664202. Its totient is φ = 28664200.

The previous prime is 28664189. The next prime is 28664213. The reversal of 28664201 is 10246682.

It is a balanced prime because it is at equal distance from previous prime (28664189) and next prime (28664213).

It can be written as a sum of positive squares in only one way, i.e., 28344976 + 319225 = 5324^2 + 565^2 .

It is a cyclic number.

It is not a de Polignac number, because 28664201 - 2⁶ = 28664137 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28664231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14332100 + 14332101.

It is an arithmetic number, because the mean of its divisors is an integer number (14332101).

Almost surely, 2^28664201 is an apocalyptic number.

It is an amenable number.

28664201 is a deficient number, since it is larger than the sum of its proper divisors (1).

28664201 is an equidigital number, since it uses as much as digits as its factorization.

28664201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 28664201 is about 5353.8958712325. The cubic root of 28664201 is about 306.0412357034.

The spelling of 28664201 in words is "twenty-eight million, six hundred sixty-four thousand, two hundred one".