18675872 has 12 divisors (see below), whose sum is σ = 36768186.
Its totient is φ = 9337920.
The previous prime is 18675859. The next prime is 18675883. The reversal of 18675872 is 27857681.
It can be written as a sum of positive squares in only one way, i.e., 16613776 + 2062096 = 4076^2 + 1436^2
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 291779 + ... + 291842.
Almost surely, 218675872 is an apocalyptic number.
It is an amenable number.
18675872 is a deficient number, since it is larger than the sum of its proper divisors (18092314).
18675872 is an equidigital number, since it uses as much as digits as its factorization.
18675872 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 583631 (or 583623 counting only the distinct ones).
The product of its digits is 188160, while the sum is 44.
The square root of 18675872 is about 4321.5589779615.
The cubic root of 18675872 is about 265.3140787747.
The spelling of 18675872 in words is "eighteen million, six hundred seventy-five thousand, eight hundred seventy-two".