28945873 has 8 divisors (see below), whose sum is σ = 33239520. Its totient is φ = 24929280.

The previous prime is 28945871. The next prime is 28945913. The reversal of 28945873 is 37854982.

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 28945873 - 2¹ = 28945871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28945871) 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, 69040 + ... + 69457.

It is an arithmetic number, because the mean of its divisors is an integer number (4154940).

Almost surely, 2^28945873 is an apocalyptic number.

It is an amenable number.

28945873 is a deficient number, since it is larger than the sum of its proper divisors (4293647).

28945873 is a wasteful number, since it uses less digits than its factorization.

28945873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138527.

The product of its digits is 483840, while the sum is 46.

The square root of 28945873 is about 5380.1368941691. The cubic root of 28945873 is about 307.0404195102.

The spelling of 28945873 in words is "twenty-eight million, nine hundred forty-five thousand, eight hundred seventy-three".