28597099 has 2 divisors, whose sum is σ = 28597100. Its totient is φ = 28597098.

The previous prime is 28597087. The next prime is 28597139. The reversal of 28597099 is 99079582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28597099 - 2⁹ = 28596587 is a prime.

It is not a weakly prime, because it can be changed into another prime (28597199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14298549 + 14298550.

It is an arithmetic number, because the mean of its divisors is an integer number (14298550).

Almost surely, 2^28597099 is an apocalyptic number.

28597099 is a deficient number, since it is larger than the sum of its proper divisors (1).

28597099 is an equidigital number, since it uses as much as digits as its factorization.

28597099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 49.

The square root of 28597099 is about 5347.6255478483. The cubic root of 28597099 is about 305.8022381170.

The spelling of 28597099 in words is "twenty-eight million, five hundred ninety-seven thousand, ninety-nine".