28916123 has 2 divisors, whose sum is σ = 28916124. Its totient is φ = 28916122.

The previous prime is 28916113. The next prime is 28916141. The reversal of 28916123 is 32161982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28916123 - 2⁸ = 28915867 is a prime.

It is a super-3 number, since 3×28916123³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is equal to p_1794803 and since 28916123 and 1794803 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28916123.

It is not a weakly prime, because it can be changed into another prime (28916113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14458061 + 14458062.

It is an arithmetic number, because the mean of its divisors is an integer number (14458062).

Almost surely, 2^28916123 is an apocalyptic number.

28916123 is a deficient number, since it is larger than the sum of its proper divisors (1).

28916123 is an equidigital number, since it uses as much as digits as its factorization.

28916123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 32.

The square root of 28916123 is about 5377.3713838641. The cubic root of 28916123 is about 306.9351934138.

The spelling of 28916123 in words is "twenty-eight million, nine hundred sixteen thousand, one hundred twenty-three".