28568417 has 2 divisors, whose sum is σ = 28568418. Its totient is φ = 28568416.

The previous prime is 28568413. The next prime is 28568459. The reversal of 28568417 is 71486582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26122321 + 2446096 = 5111^2 + 1564^2 .

It is a cyclic number.

It is not a de Polignac number, because 28568417 - 2² = 28568413 is a prime.

It is not a weakly prime, because it can be changed into another prime (28568411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14284208 + 14284209.

It is an arithmetic number, because the mean of its divisors is an integer number (14284209).

Almost surely, 2^28568417 is an apocalyptic number.

It is an amenable number.

28568417 is a deficient number, since it is larger than the sum of its proper divisors (1).

28568417 is an equidigital number, since it uses as much as digits as its factorization.

28568417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107520, while the sum is 41.

The square root of 28568417 is about 5344.9431241127. The cubic root of 28568417 is about 305.6999672097.

The spelling of 28568417 in words is "twenty-eight million, five hundred sixty-eight thousand, four hundred seventeen".