28924997 has 2 divisors, whose sum is σ = 28924998. Its totient is φ = 28924996.

The previous prime is 28924979. The next prime is 28925027. The reversal of 28924997 is 79942982.

Together with previous prime (28924979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28718881 + 206116 = 5359^2 + 454^2 .

It is a cyclic number.

It is not a de Polignac number, because 28924997 - 2⁶ = 28924933 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 (28924937) 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, 14462498 + 14462499.

It is an arithmetic number, because the mean of its divisors is an integer number (14462499).

Almost surely, 2^28924997 is an apocalyptic number.

It is an amenable number.

28924997 is a deficient number, since it is larger than the sum of its proper divisors (1).

28924997 is an equidigital number, since it uses as much as digits as its factorization.

28924997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 50.

The square root of 28924997 is about 5378.1964449060. The cubic root of 28924997 is about 306.9665884055.

The spelling of 28924997 in words is "twenty-eight million, nine hundred twenty-four thousand, nine hundred ninety-seven".