28080029 has 2 divisors, whose sum is σ = 28080030. Its totient is φ = 28080028.

The previous prime is 28080023. The next prime is 28080037. The reversal of 28080029 is 92008082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20268004 + 7812025 = 4502^2 + 2795^2 .

It is a cyclic number.

It is not a de Polignac number, because 28080029 - 2⁸ = 28079773 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28079983 and 28080010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28080023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14040014 + 14040015.

It is an arithmetic number, because the mean of its divisors is an integer number (14040015).

Almost surely, 2^28080029 is an apocalyptic number.

It is an amenable number.

28080029 is a deficient number, since it is larger than the sum of its proper divisors (1).

28080029 is an equidigital number, since it uses as much as digits as its factorization.

28080029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 28080029 is about 5299.0592561322. The cubic root of 28080029 is about 303.9479257814.

The spelling of 28080029 in words is "twenty-eight million, eighty thousand, twenty-nine".