28671982 has 12 divisors (see below), whose sum is σ = 43348320. Its totient is φ = 14223368.

The previous prime is 28671977. The next prime is 28671983. The reversal of 28671982 is 28917682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28671983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59619 + ... + 60097.

It is an arithmetic number, because the mean of its divisors is an integer number (3612360).

Almost surely, 2^28671982 is an apocalyptic number.

28671982 is a deficient number, since it is larger than the sum of its proper divisors (14676338).

28671982 is an equidigital number, since it uses as much as digits as its factorization.

28671982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827 (or 654 counting only the distinct ones).

The product of its digits is 96768, while the sum is 43.

The square root of 28671982 is about 5354.6224890276. The cubic root of 28671982 is about 306.0689251945.

The spelling of 28671982 in words is "twenty-eight million, six hundred seventy-one thousand, nine hundred eighty-two".