28784597 has 2 divisors, whose sum is σ = 28784598. Its totient is φ = 28784596.

The previous prime is 28784593. The next prime is 28784629. The reversal of 28784597 is 79548782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22363441 + 6421156 = 4729^2 + 2534^2 .

It is a cyclic number.

It is not a de Polignac number, because 28784597 - 2² = 28784593 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 (28784593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14392298 + 14392299.

It is an arithmetic number, because the mean of its divisors is an integer number (14392299).

Almost surely, 2^28784597 is an apocalyptic number.

It is an amenable number.

28784597 is a deficient number, since it is larger than the sum of its proper divisors (1).

28784597 is an equidigital number, since it uses as much as digits as its factorization.

28784597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1128960, while the sum is 50.

The square root of 28784597 is about 5365.1278642731. The cubic root of 28784597 is about 306.4691175450.

The spelling of 28784597 in words is "twenty-eight million, seven hundred eighty-four thousand, five hundred ninety-seven".