28664373 has 16 divisors (see below), whose sum is σ = 38949120. Its totient is φ = 18748416.

The previous prime is 28664353. The next prime is 28664387. The reversal of 28664373 is 37346682.

It is not a de Polignac number, because 28664373 - 2⁵ = 28664341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28664303) 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 15 ways as a sum of consecutive naturals, for example, 39508 + ... + 40226.

It is an arithmetic number, because the mean of its divisors is an integer number (2434320).

Almost surely, 2^28664373 is an apocalyptic number.

It is an amenable number.

28664373 is a deficient number, since it is larger than the sum of its proper divisors (10284747).

28664373 is a wasteful number, since it uses less digits than its factorization.

28664373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956.

The product of its digits is 145152, while the sum is 39.

The square root of 28664373 is about 5353.9119342776. The cubic root of 28664373 is about 306.0418478373.

The spelling of 28664373 in words is "twenty-eight million, six hundred sixty-four thousand, three hundred seventy-three".