28082529 has 6 divisors (see below), whose sum is σ = 40563666. Its totient is φ = 18721680.

The previous prime is 28082503. The next prime is 28082543. The reversal of 28082529 is 92528082.

It can be written as a sum of positive squares in only one way, i.e., 18792225 + 9290304 = 4335^2 + 3048^2 .

It is not a de Polignac number, because 28082529 - 2⁷ = 28082401 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28082493 and 28082502.

It is not an unprimeable number, because it can be changed into a prime (28082599) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1560132 + ... + 1560149.

It is an arithmetic number, because the mean of its divisors is an integer number (6760611).

Almost surely, 2^28082529 is an apocalyptic number.

It is an amenable number.

28082529 is a deficient number, since it is larger than the sum of its proper divisors (12481137).

28082529 is a wasteful number, since it uses less digits than its factorization.

28082529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120287 (or 3120284 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 28082529 is about 5299.2951418090. The cubic root of 28082529 is about 303.9569458014.

The spelling of 28082529 in words is "twenty-eight million, eighty-two thousand, five hundred twenty-nine".