28867982 has 16 divisors (see below), whose sum is σ = 50872752. Its totient is φ = 12112320.

The previous prime is 28867939. The next prime is 28867999. The reversal of 28867982 is 28976882.

It is a self number, because there is not a number n which added to its sum of digits gives 28867982.

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, 50183 + ... + 50754.

It is an arithmetic number, because the mean of its divisors is an integer number (3179547).

Almost surely, 2^28867982 is an apocalyptic number.

28867982 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28867982 is a deficient number, since it is larger than the sum of its proper divisors (22004770).

28867982 is a wasteful number, since it uses less digits than its factorization.

28867982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100963.

The product of its digits is 774144, while the sum is 50.

The square root of 28867982 is about 5372.8932615491. The cubic root of 28867982 is about 306.7647651401.

Subtracting 28867982 from its reverse (28976882), we obtain a square (108900 = 330²).

The spelling of 28867982 in words is "twenty-eight million, eight hundred sixty-seven thousand, nine hundred eighty-two".