28939582 has 16 divisors (see below), whose sum is σ = 49714560. Its totient is φ = 12376728.

The previous prime is 28939577. The next prime is 28939583. The reversal of 28939582 is 28593982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28939583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5769 + ... + 9547.

It is an arithmetic number, because the mean of its divisors is an integer number (3107160).

Almost surely, 2^28939582 is an apocalyptic number.

28939582 is a deficient number, since it is larger than the sum of its proper divisors (20774978).

28939582 is a wasteful number, since it uses less digits than its factorization.

28939582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4335.

The product of its digits is 311040, while the sum is 46.

The square root of 28939582 is about 5379.5522118481. The cubic root of 28939582 is about 307.0181741832.

The spelling of 28939582 in words is "twenty-eight million, nine hundred thirty-nine thousand, five hundred eighty-two".