28365329 has 2 divisors, whose sum is σ = 28365330. Its totient is φ = 28365328.

The previous prime is 28365319. The next prime is 28365353. The reversal of 28365329 is 92356382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17977600 + 10387729 = 4240^2 + 3223^2 .

It is a cyclic number.

It is not a de Polignac number, because 28365329 - 2¹² = 28361233 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28365292 and 28365301.

It is not a weakly prime, because it can be changed into another prime (28365319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14182664 + 14182665.

It is an arithmetic number, because the mean of its divisors is an integer number (14182665).

Almost surely, 2^28365329 is an apocalyptic number.

It is an amenable number.

28365329 is a deficient number, since it is larger than the sum of its proper divisors (1).

28365329 is an equidigital number, since it uses as much as digits as its factorization.

28365329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 38.

The square root of 28365329 is about 5325.9110957657. The cubic root of 28365329 is about 304.9738542489.

The spelling of 28365329 in words is "twenty-eight million, three hundred sixty-five thousand, three hundred twenty-nine".