28582101 has 6 divisors (see below), whose sum is σ = 41285270. Its totient is φ = 19054728.

The previous prime is 28582079. The next prime is 28582109. The reversal of 28582101 is 10128582.

It can be written as a sum of positive squares in only one way, i.e., 25010001 + 3572100 = 5001^2 + 1890^2 .

It is not a de Polignac number, because 28582101 - 2⁵ = 28582069 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28582109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1587886 + ... + 1587903.

Almost surely, 2^28582101 is an apocalyptic number.

It is an amenable number.

28582101 is a deficient number, since it is larger than the sum of its proper divisors (12703169).

28582101 is a wasteful number, since it uses less digits than its factorization.

28582101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3175795 (or 3175792 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 28582101 is about 5346.2230593195. The cubic root of 28582101 is about 305.7487685442.

The spelling of 28582101 in words is "twenty-eight million, five hundred eighty-two thousand, one hundred one".