28682747 has 4 divisors (see below), whose sum is σ = 28741656. Its totient is φ = 28623840.

The previous prime is 28682713. The next prime is 28682777. The reversal of 28682747 is 74728682.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28682747 - 2⁶ = 28682683 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28682698 and 28682707.

It is not an unprimeable number, because it can be changed into a prime (28682777) 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 in 3 ways as a sum of consecutive naturals, for example, 28718 + ... + 29699.

It is an arithmetic number, because the mean of its divisors is an integer number (7185414).

Almost surely, 2^28682747 is an apocalyptic number.

28682747 is a deficient number, since it is larger than the sum of its proper divisors (58909).

28682747 is an equidigital number, since it uses as much as digits as its factorization.

28682747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58908.

The product of its digits is 301056, while the sum is 44.

The square root of 28682747 is about 5355.6276009446. The cubic root of 28682747 is about 306.1072252990.

The spelling of 28682747 in words is "twenty-eight million, six hundred eighty-two thousand, seven hundred forty-seven".