28789597 has 2 divisors, whose sum is σ = 28789598. Its totient is φ = 28789596.

The previous prime is 28789571. The next prime is 28789601. The reversal of 28789597 is 79598782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27730756 + 1058841 = 5266^2 + 1029^2 .

It is a cyclic number.

It is not a de Polignac number, because 28789597 - 2⁷ = 28789469 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 (28789567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14394798 + 14394799.

It is an arithmetic number, because the mean of its divisors is an integer number (14394799).

Almost surely, 2^28789597 is an apocalyptic number.

It is an amenable number.

28789597 is a deficient number, since it is larger than the sum of its proper divisors (1).

28789597 is an equidigital number, since it uses as much as digits as its factorization.

28789597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 55.

The square root of 28789597 is about 5365.5938161587. The cubic root of 28789597 is about 306.4868614895.

The spelling of 28789597 in words is "twenty-eight million, seven hundred eighty-nine thousand, five hundred ninety-seven".