18055446 has 8 divisors (see below), whose sum is σ = 36110904. Its totient is φ = 6018480.

The previous prime is 18055441. The next prime is 18055447. The reversal of 18055446 is 64455081.

It is a sphenic number, since it is the product of 3 distinct primes.

18055446 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18055441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1504615 + ... + 1504626.

It is an arithmetic number, because the mean of its divisors is an integer number (4513863).

Almost surely, 2^18055446 is an apocalyptic number.

18055446 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18055446 is a wasteful number, since it uses less digits than its factorization.

18055446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3009246.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 18055446 is about 4249.1700366071. The cubic root of 18055446 is about 262.3429554976.

The spelling of 18055446 in words is "eighteen million, fifty-five thousand, four hundred forty-six".