28875873 has 16 divisors (see below), whose sum is σ = 42585536. Its totient is φ = 17288640.

The previous prime is 28875871. The next prime is 28875883. The reversal of 28875873 is 37857882.

It is not a de Polignac number, because 28875873 - 2¹ = 28875871 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28875871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8563 + ... + 11448.

It is an arithmetic number, because the mean of its divisors is an integer number (2661596).

Almost surely, 2^28875873 is an apocalyptic number.

It is an amenable number.

28875873 is a deficient number, since it is larger than the sum of its proper divisors (13709663).

28875873 is a wasteful number, since it uses less digits than its factorization.

28875873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20064.

The product of its digits is 752640, while the sum is 48.

The square root of 28875873 is about 5373.6275457088. The cubic root of 28875873 is about 306.7927137538.

Subtracting 28875873 from its reverse (37857882), we obtain a square (8982009 = 2997²).

The spelling of 28875873 in words is "twenty-eight million, eight hundred seventy-five thousand, eight hundred seventy-three".