18382856 has 8 divisors (see below), whose sum is σ = 34467870. Its totient is φ = 9191424.

The previous prime is 18382849. The next prime is 18382873. The reversal of 18382856 is 65828381.

It can be written as a sum of positive squares in only one way, i.e., 18062500 + 320356 = 4250^2 + 566^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1148921 + ... + 1148936.

Almost surely, 2^18382856 is an apocalyptic number.

It is an amenable number.

18382856 is a deficient number, since it is larger than the sum of its proper divisors (16085014).

18382856 is a wasteful number, since it uses less digits than its factorization.

18382856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2297863 (or 2297859 counting only the distinct ones).

The product of its digits is 92160, while the sum is 41.

The square root of 18382856 is about 4287.5232943974. The cubic root of 18382856 is about 263.9192054568.

The spelling of 18382856 in words is "eighteen million, three hundred eighty-two thousand, eight hundred fifty-six".