28303125 has 24 divisors (see below), whose sum is σ = 47184480. Its totient is φ = 15090000.

The previous prime is 28303117. The next prime is 28303127. The reversal of 28303125 is 52130382.

It is not a de Polignac number, because 28303125 - 2³ = 28303117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28303095 and 28303104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28303127) 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 23 ways as a sum of consecutive naturals, for example, 7866 + ... + 10884.

It is an arithmetic number, because the mean of its divisors is an integer number (1966020).

Almost surely, 2^28303125 is an apocalyptic number.

28303125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28303125 is a deficient number, since it is larger than the sum of its proper divisors (18881355).

28303125 is an frugal number, since it uses more digits than its factorization.

28303125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3047 (or 3027 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 28303125 is about 5320.0681386614. The cubic root of 28303125 is about 304.7507593832.

The spelling of 28303125 in words is "twenty-eight million, three hundred three thousand, one hundred twenty-five".