28866125 has 8 divisors (see below), whose sum is σ = 36025080. Its totient is φ = 23092800.

The previous prime is 28866109. The next prime is 28866151. The reversal of 28866125 is 52166882.

It can be written as a sum of positive squares in 4 ways, for example, as 499849 + 28366276 = 707^2 + 5326^2 .

It is not a de Polignac number, because 28866125 - 2⁴ = 28866109 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115340 + ... + 115589.

It is an arithmetic number, because the mean of its divisors is an integer number (4503135).

Almost surely, 2^28866125 is an apocalyptic number.

28866125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28866125 is a deficient number, since it is larger than the sum of its proper divisors (7158955).

28866125 is an equidigital number, since it uses as much as digits as its factorization.

28866125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230944 (or 230934 counting only the distinct ones).

The product of its digits is 46080, while the sum is 38.

The square root of 28866125 is about 5372.7204468500. The cubic root of 28866125 is about 306.7581872137.

The spelling of 28866125 in words is "twenty-eight million, eight hundred sixty-six thousand, one hundred twenty-five".