18705448 has 8 divisors (see below), whose sum is σ = 35072730. Its totient is φ = 9352720.

The previous prime is 18705439. The next prime is 18705469. The reversal of 18705448 is 84450781.

It can be written as a sum of positive squares in only one way, i.e., 12264004 + 6441444 = 3502^2 + 2538^2 .

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

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, 1169083 + ... + 1169098.

Almost surely, 2^18705448 is an apocalyptic number.

It is an amenable number.

18705448 is a deficient number, since it is larger than the sum of its proper divisors (16367282).

18705448 is a wasteful number, since it uses less digits than its factorization.

18705448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2338187 (or 2338183 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 18705448 is about 4324.9795375238. The cubic root of 18705448 is about 265.4540595759.

The spelling of 18705448 in words is "eighteen million, seven hundred five thousand, four hundred forty-eight".