28044073 has 8 divisors (see below), whose sum is σ = 29092680. Its totient is φ = 27000960.

The previous prime is 28044059. The next prime is 28044103. The reversal of 28044073 is 37044082.

It can be written as a sum of positive squares in 4 ways, for example, as 28224 + 28015849 = 168^2 + 5293^2 .

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 28044073 - 2¹³ = 28035881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28044043) 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, 11061 + ... + 13357.

It is an arithmetic number, because the mean of its divisors is an integer number (3636585).

Almost surely, 2^28044073 is an apocalyptic number.

It is an amenable number.

28044073 is a deficient number, since it is larger than the sum of its proper divisors (1048607).

28044073 is a wasteful number, since it uses less digits than its factorization.

28044073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2747.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 28044073 is about 5295.6654917017. The cubic root of 28044073 is about 303.8181369834.

Subtracting 28044073 from its reverse (37044082), we obtain a palindrome (9000009).

The spelling of 28044073 in words is "twenty-eight million, forty-four thousand, seventy-three".