28276125 has 16 divisors (see below), whose sum is σ = 47052096. Its totient is φ = 15080400.

The previous prime is 28276121. The next prime is 28276139. The reversal of 28276125 is 52167282.

It is not a de Polignac number, because 28276125 - 2² = 28276121 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28276121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37327 + ... + 38076.

It is an arithmetic number, because the mean of its divisors is an integer number (2940756).

Almost surely, 2^28276125 is an apocalyptic number.

28276125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28276125 is a deficient number, since it is larger than the sum of its proper divisors (18775971).

28276125 is an equidigital number, since it uses as much as digits as its factorization.

28276125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75421 (or 75411 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 28276125 is about 5317.5299717068. The cubic root of 28276125 is about 304.6538220501.

The spelling of 28276125 in words is "twenty-eight million, two hundred seventy-six thousand, one hundred twenty-five".