28512673 has 8 divisors (see below), whose sum is σ = 34301120. Its totient is φ = 23153040.

The previous prime is 28512667. The next prime is 28512683. The reversal of 28512673 is 37621582.

It is a happy number.

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 28512673 - 2⁹ = 28512161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28512623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107058 + ... + 107323.

It is an arithmetic number, because the mean of its divisors is an integer number (4287640).

Almost surely, 2^28512673 is an apocalyptic number.

It is an amenable number.

28512673 is a deficient number, since it is larger than the sum of its proper divisors (5788447).

28512673 is a wasteful number, since it uses less digits than its factorization.

28512673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214407.

The product of its digits is 20160, while the sum is 34.

The square root of 28512673 is about 5339.7259292964. The cubic root of 28512673 is about 305.5010058335.

The spelling of 28512673 in words is "twenty-eight million, five hundred twelve thousand, six hundred seventy-three".