28875146 has 12 divisors (see below), whose sum is σ = 46011318. Its totient is φ = 13588032.

The previous prime is 28875113. The next prime is 28875169. The reversal of 28875146 is 64157882.

It can be written as a sum of positive squares in 3 ways, for example, as 27447121 + 1428025 = 5239^2 + 1195^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24401 + ... + 25556.

Almost surely, 2^28875146 is an apocalyptic number.

28875146 is a deficient number, since it is larger than the sum of its proper divisors (17136172).

28875146 is a wasteful number, since it uses less digits than its factorization.

28875146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49993 (or 49976 counting only the distinct ones).

The product of its digits is 107520, while the sum is 41.

The square root of 28875146 is about 5373.5599001035. The cubic root of 28875146 is about 306.7901390533.

The spelling of 28875146 in words is "twenty-eight million, eight hundred seventy-five thousand, one hundred forty-six".