28676489 has 2 divisors, whose sum is σ = 28676490. Its totient is φ = 28676488.

The previous prime is 28676477. The next prime is 28676503. The reversal of 28676489 is 98467682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21086464 + 7590025 = 4592^2 + 2755^2 .

It is a cyclic number.

It is not a de Polignac number, because 28676489 - 2¹² = 28672393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28676449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14338244 + 14338245.

It is an arithmetic number, because the mean of its divisors is an integer number (14338245).

Almost surely, 2^28676489 is an apocalyptic number.

It is an amenable number.

28676489 is a deficient number, since it is larger than the sum of its proper divisors (1).

28676489 is an equidigital number, since it uses as much as digits as its factorization.

28676489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 50.

The square root of 28676489 is about 5355.0433238210. The cubic root of 28676489 is about 306.0849615278.

The spelling of 28676489 in words is "twenty-eight million, six hundred seventy-six thousand, four hundred eighty-nine".