28466489 has 2 divisors, whose sum is σ = 28466490. Its totient is φ = 28466488.

The previous prime is 28466467. The next prime is 28466507. The reversal of 28466489 is 98466482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28440889 + 25600 = 5333^2 + 160^2 .

It is a cyclic number.

It is not a de Polignac number, because 28466489 - 2¹² = 28462393 is a prime.

It is not a weakly prime, because it can be changed into another prime (28466189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14233244 + 14233245.

It is an arithmetic number, because the mean of its divisors is an integer number (14233245).

Almost surely, 2^28466489 is an apocalyptic number.

It is an amenable number.

28466489 is a deficient number, since it is larger than the sum of its proper divisors (1).

28466489 is an equidigital number, since it uses as much as digits as its factorization.

28466489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 663552, while the sum is 47.

The square root of 28466489 is about 5335.3996101511. The cubic root of 28466489 is about 305.3359694742.

The spelling of 28466489 in words is "twenty-eight million, four hundred sixty-six thousand, four hundred eighty-nine".