28869582 has 32 divisors (see below), whose sum is σ = 66408192. Its totient is φ = 8195904.

The previous prime is 28869559. The next prime is 28869593. The reversal of 28869582 is 28596882.

It is a congruent number.

It is an unprimeable number.

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, 4738 + ... + 8954.

It is an arithmetic number, because the mean of its divisors is an integer number (2075256).

Almost surely, 2^28869582 is an apocalyptic number.

28869582 is an abundant number, since it is smaller than the sum of its proper divisors (37538610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28869582 is a wasteful number, since it uses less digits than its factorization.

28869582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4392.

The product of its digits is 552960, while the sum is 48.

The square root of 28869582 is about 5373.0421550552. The cubic root of 28869582 is about 306.7704324865.

The spelling of 28869582 in words is "twenty-eight million, eight hundred sixty-nine thousand, five hundred eighty-two".