28699603 has 2 divisors, whose sum is σ = 28699604. Its totient is φ = 28699602.

The previous prime is 28699571. The next prime is 28699613. The reversal of 28699603 is 30699682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28699603 - 2⁵ = 28699571 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28699603.

It is not a weakly prime, because it can be changed into another prime (28699613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14349801 + 14349802.

It is an arithmetic number, because the mean of its divisors is an integer number (14349802).

Almost surely, 2^28699603 is an apocalyptic number.

28699603 is a deficient number, since it is larger than the sum of its proper divisors (1).

28699603 is an equidigital number, since it uses as much as digits as its factorization.

28699603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 28699603 is about 5357.2010415888. The cubic root of 28699603 is about 306.1671769367.

The spelling of 28699603 in words is "twenty-eight million, six hundred ninety-nine thousand, six hundred three".