28816379 has 2 divisors, whose sum is σ = 28816380. Its totient is φ = 28816378.

The previous prime is 28816373. The next prime is 28816397. The reversal of 28816379 is 97361882.

Together with next prime (28816397) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28816379 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28816373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14408189 + 14408190.

It is an arithmetic number, because the mean of its divisors is an integer number (14408190).

Almost surely, 2^28816379 is an apocalyptic number.

28816379 is a deficient number, since it is larger than the sum of its proper divisors (1).

28816379 is an equidigital number, since it uses as much as digits as its factorization.

28816379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 44.

The square root of 28816379 is about 5368.0889523181. The cubic root of 28816379 is about 306.5818701961.

The spelling of 28816379 in words is "twenty-eight million, eight hundred sixteen thousand, three hundred seventy-nine".