18808324 has 12 divisors (see below), whose sum is σ = 34850844. Its totient is φ = 8850944.

The previous prime is 18808303. The next prime is 18808333. The reversal of 18808324 is 42380881.

It can be written as a sum of positive squares in 2 ways, for example, as 13191424 + 5616900 = 3632^2 + 2370^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 18808324.

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 3 ways as a sum of consecutive naturals, for example, 138229 + ... + 138364.

It is an arithmetic number, because the mean of its divisors is an integer number (2904237).

Almost surely, 2^18808324 is an apocalyptic number.

It is an amenable number.

18808324 is a deficient number, since it is larger than the sum of its proper divisors (16042520).

18808324 is a wasteful number, since it uses less digits than its factorization.

18808324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276614 (or 276612 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 18808324 is about 4336.8564652292. The cubic root of 18808324 is about 265.9398171645.

The spelling of 18808324 in words is "eighteen million, eight hundred eight thousand, three hundred twenty-four".