28065673 has 8 divisors (see below), whose sum is σ = 29067336. Its totient is φ = 27081600.

The previous prime is 28065659. The next prime is 28065677. The reversal of 28065673 is 37656082.

It can be written as a sum of positive squares in 4 ways, for example, as 3888784 + 24176889 = 1972^2 + 4917^2 .

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 28065673 - 2¹³ = 28057481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28065677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1108 + ... + 7573.

It is an arithmetic number, because the mean of its divisors is an integer number (3633417).

Almost surely, 2^28065673 is an apocalyptic number.

It is an amenable number.

28065673 is a deficient number, since it is larger than the sum of its proper divisors (1001663).

28065673 is an equidigital number, since it uses as much as digits as its factorization.

28065673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8795.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 28065673 is about 5297.7045028956. The cubic root of 28065673 is about 303.8961188519.

The spelling of 28065673 in words is "twenty-eight million, sixty-five thousand, six hundred seventy-three".