28997119 has 2 divisors, whose sum is σ = 28997120. Its totient is φ = 28997118.

The previous prime is 28997117. The next prime is 28997123. The reversal of 28997119 is 91179982.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28997119 - 2¹ = 28997117 is a prime.

It is a super-2 number, since 2×28997119² = 1681665820600322, which contains 22 as substring.

Together with 28997117, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28997113) 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, 14498559 + 14498560.

It is an arithmetic number, because the mean of its divisors is an integer number (14498560).

Almost surely, 2^28997119 is an apocalyptic number.

28997119 is a deficient number, since it is larger than the sum of its proper divisors (1).

28997119 is an equidigital number, since it uses as much as digits as its factorization.

28997119 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 46.

The square root of 28997119 is about 5384.8973063560. The cubic root of 28997119 is about 307.2215082721.

The spelling of 28997119 in words is "twenty-eight million, nine hundred ninety-seven thousand, one hundred nineteen".