28674709 has 8 divisors (see below), whose sum is σ = 33186560. Its totient is φ = 24266736.

The previous prime is 28674683. The next prime is 28674713. The reversal of 28674709 is 90747682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28674709 - 2⁵ = 28674677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28674719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25374 + ... + 26479.

It is an arithmetic number, because the mean of its divisors is an integer number (4148320).

Almost surely, 2^28674709 is an apocalyptic number.

It is an amenable number.

28674709 is a deficient number, since it is larger than the sum of its proper divisors (4511851).

28674709 is an equidigital number, since it uses as much as digits as its factorization.

28674709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51939.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 28674709 is about 5354.8771227732. The cubic root of 28674709 is about 306.0786283198.

The spelling of 28674709 in words is "twenty-eight million, six hundred seventy-four thousand, seven hundred nine".