28044973 has 8 divisors (see below), whose sum is σ = 30898656. Its totient is φ = 25242000.

The previous prime is 28044967. The next prime is 28044997. The reversal of 28044973 is 37944082.

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 28044973 - 2⁵ = 28044941 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 (28047973) 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, 11511 + ... + 13732.

It is an arithmetic number, because the mean of its divisors is an integer number (3862332).

Almost surely, 2^28044973 is an apocalyptic number.

It is an amenable number.

28044973 is a deficient number, since it is larger than the sum of its proper divisors (2853683).

28044973 is a wasteful number, since it uses less digits than its factorization.

28044973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25355.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 28044973 is about 5295.7504661757. The cubic root of 28044973 is about 303.8213870273.

It can be divided in two parts, 2804 and 4973, that added together give a palindrome (7777).

The spelling of 28044973 in words is "twenty-eight million, forty-four thousand, nine hundred seventy-three".