28560019 has 2 divisors, whose sum is σ = 28560020. Its totient is φ = 28560018.

The previous prime is 28559977. The next prime is 28560029. The reversal of 28560019 is 91006582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28560019 - 2¹⁵ = 28527251 is a prime.

It is a super-2 number, since 2×28560019² = 1631349370560722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28560029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14280009 + 14280010.

It is an arithmetic number, because the mean of its divisors is an integer number (14280010).

Almost surely, 2^28560019 is an apocalyptic number.

28560019 is a deficient number, since it is larger than the sum of its proper divisors (1).

28560019 is an equidigital number, since it uses as much as digits as its factorization.

28560019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 28560019 is about 5344.1574639975. The cubic root of 28560019 is about 305.6700096529.

The spelling of 28560019 in words is "twenty-eight million, five hundred sixty thousand, nineteen".