28859497 has 2 divisors, whose sum is σ = 28859498. Its totient is φ = 28859496.

The previous prime is 28859477. The next prime is 28859533. The reversal of 28859497 is 79495882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15139881 + 13719616 = 3891^2 + 3704^2 .

It is a cyclic number.

It is not a de Polignac number, because 28859497 - 2²³ = 20470889 is a prime.

It is not a weakly prime, because it can be changed into another prime (28859417) 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, 14429748 + 14429749.

It is an arithmetic number, because the mean of its divisors is an integer number (14429749).

Almost surely, 2^28859497 is an apocalyptic number.

It is an amenable number.

28859497 is a deficient number, since it is larger than the sum of its proper divisors (1).

28859497 is an equidigital number, since it uses as much as digits as its factorization.

28859497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 52.

The square root of 28859497 is about 5372.1035917041. The cubic root of 28859497 is about 306.7347069937.

The spelling of 28859497 in words is "twenty-eight million, eight hundred fifty-nine thousand, four hundred ninety-seven".