18053712 has 120 divisors (see below), whose sum is σ = 54857600. Its totient is φ = 5683392.

The previous prime is 18053701. The next prime is 18053713. The reversal of 18053712 is 21735081.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18053713) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 228489 + ... + 228567.

Almost surely, 2^18053712 is an apocalyptic number.

18053712 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 18053712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27428800).

18053712 is an abundant number, since it is smaller than the sum of its proper divisors (36803888).

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

18053712 is a wasteful number, since it uses less digits than its factorization.

18053712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 18053712 is about 4248.9659918620. The cubic root of 18053712 is about 262.3345569744.

Adding to 18053712 its reverse (21735081), we get a palindrome (39788793).

The spelling of 18053712 in words is "eighteen million, fifty-three thousand, seven hundred twelve".