28842797 has 2 divisors, whose sum is σ = 28842798. Its totient is φ = 28842796.

The previous prime is 28842769. The next prime is 28842833. The reversal of 28842797 is 79724882.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28793956 + 48841 = 5366^2 + 221^2 .

It is a cyclic number.

It is not a de Polignac number, because 28842797 - 2¹⁰ = 28841773 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28842707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14421398 + 14421399.

It is an arithmetic number, because the mean of its divisors is an integer number (14421399).

Almost surely, 2^28842797 is an apocalyptic number.

It is an amenable number.

28842797 is a deficient number, since it is larger than the sum of its proper divisors (1).

28842797 is an equidigital number, since it uses as much as digits as its factorization.

28842797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 451584, while the sum is 47.

The square root of 28842797 is about 5370.5490408337. The cubic root of 28842797 is about 306.6755299633.

The spelling of 28842797 in words is "twenty-eight million, eight hundred forty-two thousand, seven hundred ninety-seven".