28305067 has 8 divisors (see below), whose sum is σ = 32383712. Its totient is φ = 24235200.

The previous prime is 28305061. The next prime is 28305071. The reversal of 28305067 is 76050382.

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 28305067 - 2¹¹ = 28303019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28305061) 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 7 ways as a sum of consecutive naturals, for example, 7717 + ... + 10777.

It is an arithmetic number, because the mean of its divisors is an integer number (4047964).

Almost surely, 2^28305067 is an apocalyptic number.

28305067 is a deficient number, since it is larger than the sum of its proper divisors (4078645).

28305067 is a wasteful number, since it uses less digits than its factorization.

28305067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4389.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 28305067 is about 5320.2506519900. The cubic root of 28305067 is about 304.7577293137.

The spelling of 28305067 in words is "twenty-eight million, three hundred five thousand, sixty-seven".