28789125 has 16 divisors (see below), whose sum is σ = 47905728. Its totient is φ = 15354000.

The previous prime is 28789091. The next prime is 28789127. The reversal of 28789125 is 52198782.

It is not a de Polignac number, because 28789125 - 2⁸ = 28788869 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28789127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38011 + ... + 38760.

It is an arithmetic number, because the mean of its divisors is an integer number (2994108).

Almost surely, 2^28789125 is an apocalyptic number.

28789125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28789125 is a deficient number, since it is larger than the sum of its proper divisors (19116603).

28789125 is an equidigital number, since it uses as much as digits as its factorization.

28789125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76789 (or 76779 counting only the distinct ones).

The product of its digits is 80640, while the sum is 42.

The square root of 28789125 is about 5365.5498320303. The cubic root of 28789125 is about 306.4851865489.

The spelling of 28789125 in words is "twenty-eight million, seven hundred eighty-nine thousand, one hundred twenty-five".