28710125 has 8 divisors (see below), whose sum is σ = 35830392. Its totient is φ = 22968000.

The previous prime is 28710109. The next prime is 28710151. The reversal of 28710125 is 52101782.

It can be written as a sum of positive squares in 4 ways, for example, as 119716 + 28590409 = 346^2 + 5347^2 .

It is not a de Polignac number, because 28710125 - 2⁴ = 28710109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28710094 and 28710103.

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, 114716 + ... + 114965.

It is an arithmetic number, because the mean of its divisors is an integer number (4478799).

Almost surely, 2^28710125 is an apocalyptic number.

28710125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28710125 is a deficient number, since it is larger than the sum of its proper divisors (7120267).

28710125 is an equidigital number, since it uses as much as digits as its factorization.

28710125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229696 (or 229686 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 28710125 is about 5358.1829942621. The cubic root of 28710125 is about 306.2045885741.

The spelling of 28710125 in words is "twenty-eight million, seven hundred ten thousand, one hundred twenty-five".