28285667 has 2 divisors, whose sum is σ = 28285668. Its totient is φ = 28285666.

The previous prime is 28285657. The next prime is 28285679. The reversal of 28285667 is 76658282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28285667 - 2¹⁰ = 28284643 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28285657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14142833 + 14142834.

It is an arithmetic number, because the mean of its divisors is an integer number (14142834).

Almost surely, 2^28285667 is an apocalyptic number.

28285667 is a deficient number, since it is larger than the sum of its proper divisors (1).

28285667 is an equidigital number, since it uses as much as digits as its factorization.

28285667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 44.

The square root of 28285667 is about 5318.4271171090. The cubic root of 28285667 is about 304.6880874694.

The spelling of 28285667 in words is "twenty-eight million, two hundred eighty-five thousand, six hundred sixty-seven".