28580297 has 2 divisors, whose sum is σ = 28580298. Its totient is φ = 28580296.

The previous prime is 28580231. The next prime is 28580309. The reversal of 28580297 is 79208582.

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., 21631801 + 6948496 = 4651^2 + 2636^2 .

It is a cyclic number.

It is not a de Polignac number, because 28580297 - 2¹⁰ = 28579273 is a prime.

It is not a weakly prime, because it can be changed into another prime (28580897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14290148 + 14290149.

It is an arithmetic number, because the mean of its divisors is an integer number (14290149).

Almost surely, 2^28580297 is an apocalyptic number.

It is an amenable number.

28580297 is a deficient number, since it is larger than the sum of its proper divisors (1).

28580297 is an equidigital number, since it uses as much as digits as its factorization.

28580297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 28580297 is about 5346.0543394171. The cubic root of 28580297 is about 305.7423358193.

The spelling of 28580297 in words is "twenty-eight million, five hundred eighty thousand, two hundred ninety-seven".