28032617 has 2 divisors, whose sum is σ = 28032618. Its totient is φ = 28032616.

The previous prime is 28032553. The next prime is 28032623. The reversal of 28032617 is 71623082.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21381376 + 6651241 = 4624^2 + 2579^2 .

It is a cyclic number.

It is not a de Polignac number, because 28032617 - 2⁶ = 28032553 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28032617.

It is not a weakly prime, because it can be changed into another prime (28032217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14016308 + 14016309.

It is an arithmetic number, because the mean of its divisors is an integer number (14016309).

Almost surely, 2^28032617 is an apocalyptic number.

It is an amenable number.

28032617 is a deficient number, since it is larger than the sum of its proper divisors (1).

28032617 is an equidigital number, since it uses as much as digits as its factorization.

28032617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 28032617 is about 5294.5837419008. The cubic root of 28032617 is about 303.7767614598.

Adding to 28032617 its reverse (71623082), we get a palindrome (99655699).

The spelling of 28032617 in words is "twenty-eight million, thirty-two thousand, six hundred seventeen".