18053472 has 48 divisors (see below), whose sum is σ = 47945520. Its totient is φ = 5947392.

The previous prime is 18053461. The next prime is 18053509. The reversal of 18053472 is 27435081.

It is a tau number, because it is divible by the number of its divisors (48).

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 7 ways as a sum of consecutive naturals, for example, 7488 + ... + 9600.

It is an arithmetic number, because the mean of its divisors is an integer number (998865).

Almost surely, 2^18053472 is an apocalyptic number.

18053472 is a gapful number since it is divisible by the number (12) 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 18053472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23972760).

18053472 is an abundant number, since it is smaller than the sum of its proper divisors (29892048).

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

18053472 is a wasteful number, since it uses less digits than its factorization.

18053472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2215 (or 2207 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 18053472 is about 4248.9377496028. The cubic root of 18053472 is about 262.3333945067. Note that the first 4 decimals are identical.

The spelling of 18053472 in words is "eighteen million, fifty-three thousand, four hundred seventy-two".