28180982 has 16 divisors (see below), whose sum is σ = 44074800. Its totient is φ = 13497120.

The previous prime is 28180973. The next prime is 28180991. The reversal of 28180982 is 28908182.

It is an interprime number because it is at equal distance from previous prime (28180973) and next prime (28180991).

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 7 ways as a sum of consecutive naturals, for example, 5744 + ... + 9452.

It is an arithmetic number, because the mean of its divisors is an integer number (2754675).

Almost surely, 2^28180982 is an apocalyptic number.

28180982 is a deficient number, since it is larger than the sum of its proper divisors (15893818).

28180982 is a wasteful number, since it uses less digits than its factorization.

28180982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3871.

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 28180982 is about 5308.5762686430. The cubic root of 28180982 is about 304.3117401741.

The spelling of 28180982 in words is "twenty-eight million, one hundred eighty thousand, nine hundred eighty-two".