28408063 has 2 divisors, whose sum is σ = 28408064. Its totient is φ = 28408062.

The previous prime is 28408057. The next prime is 28408091. The reversal of 28408063 is 36080482.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28408063 - 2⁵ = 28408031 is a prime.

It is equal to p_1765237 and since 28408063 and 1765237 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28408033) 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, 14204031 + 14204032.

It is an arithmetic number, because the mean of its divisors is an integer number (14204032).

Almost surely, 2^28408063 is an apocalyptic number.

28408063 is a deficient number, since it is larger than the sum of its proper divisors (1).

28408063 is an equidigital number, since it uses as much as digits as its factorization.

28408063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 28408063 is about 5329.9214815980. The cubic root of 28408063 is about 305.1269309539.

The spelling of 28408063 in words is "twenty-eight million, four hundred eight thousand, sixty-three".