28901017 has 2 divisors, whose sum is σ = 28901018. Its totient is φ = 28901016.

The previous prime is 28900997. The next prime is 28901027. The reversal of 28901017 is 71010982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21261321 + 7639696 = 4611^2 + 2764^2 .

It is a cyclic number.

It is not a de Polignac number, because 28901017 - 2⁷ = 28900889 is a prime.

It is not a weakly prime, because it can be changed into another prime (28901027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14450508 + 14450509.

It is an arithmetic number, because the mean of its divisors is an integer number (14450509).

Almost surely, 2^28901017 is an apocalyptic number.

It is an amenable number.

28901017 is a deficient number, since it is larger than the sum of its proper divisors (1).

28901017 is an equidigital number, since it uses as much as digits as its factorization.

28901017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 28901017 is about 5375.9666107594. The cubic root of 28901017 is about 306.8817356864.

Adding to 28901017 its reverse (71010982), we get a palindrome (99911999).

The spelling of 28901017 in words is "twenty-eight million, nine hundred one thousand, seventeen".