28843172 has 12 divisors (see below), whose sum is σ = 51706956. Its totient is φ = 14069760.

The previous prime is 28843151. The next prime is 28843189. The reversal of 28843172 is 27134882.

It can be written as a sum of positive squares in 2 ways, for example, as 10916416 + 17926756 = 3304^2 + 4234^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87773 + ... + 88100.

It is an arithmetic number, because the mean of its divisors is an integer number (4308913).

Almost surely, 2^28843172 is an apocalyptic number.

It is an amenable number.

28843172 is a deficient number, since it is larger than the sum of its proper divisors (22863784).

28843172 is a wasteful number, since it uses less digits than its factorization.

28843172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175918 (or 175916 counting only the distinct ones).

The product of its digits is 21504, while the sum is 35.

The square root of 28843172 is about 5370.5839533518. The cubic root of 28843172 is about 306.6768590395.

The spelling of 28843172 in words is "twenty-eight million, eight hundred forty-three thousand, one hundred seventy-two".