18446448 has 20 divisors (see below), whose sum is σ = 47653448. Its totient is φ = 6148800.

The previous prime is 18446431. The next prime is 18446453. The reversal of 18446448 is 84464481.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 192103 + ... + 192198.

Almost surely, 2^18446448 is an apocalyptic number.

It is an amenable number.

18446448 is an abundant number, since it is smaller than the sum of its proper divisors (29207000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18446448 is a wasteful number, since it uses less digits than its factorization.

18446448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384312 (or 384306 counting only the distinct ones).

The product of its digits is 98304, while the sum is 39.

The square root of 18446448 is about 4294.9328283455. The cubic root of 18446448 is about 264.2231813372.

The spelling of 18446448 in words is "eighteen million, four hundred forty-six thousand, four hundred forty-eight".