18445056 has 144 divisors (see below), whose sum is σ = 58082304. Its totient is φ = 5087232.

The previous prime is 18445027. The next prime is 18445079. The reversal of 18445056 is 65054481.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252636 + ... + 252708.

Almost surely, 2^18445056 is an apocalyptic number.

18445056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18445056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29041152).

18445056 is an abundant number, since it is smaller than the sum of its proper divisors (39637248).

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

18445056 is an equidigital number, since it uses as much as digits as its factorization.

18445056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 132 counting only the distinct ones).

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

The square root of 18445056 is about 4294.7707738598. The cubic root of 18445056 is about 264.2165349281.

The spelling of 18445056 in words is "eighteen million, four hundred forty-five thousand, fifty-six".