28017007 has 2 divisors, whose sum is σ = 28017008. Its totient is φ = 28017006.

The previous prime is 28016999. The next prime is 28017023. The reversal of 28017007 is 70071082.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28017007 - 2³ = 28016999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28017047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14008503 + 14008504.

It is an arithmetic number, because the mean of its divisors is an integer number (14008504).

Almost surely, 2^28017007 is an apocalyptic number.

28017007 is a deficient number, since it is larger than the sum of its proper divisors (1).

28017007 is an equidigital number, since it uses as much as digits as its factorization.

28017007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 28017007 is about 5293.1093886297. The cubic root of 28017007 is about 303.7203648260.

Adding to 28017007 its reverse (70071082), we get a palindrome (98088089).

The spelling of 28017007 in words is "twenty-eight million, seventeen thousand, seven".