18053568 has 84 divisors (see below), whose sum is σ = 55750968. Its totient is φ = 5552640.

The previous prime is 18053533. The next prime is 18053599. The reversal of 18053568 is 86535081.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 6283 + ... + 8693.

It is an arithmetic number, because the mean of its divisors is an integer number (663702).

Almost surely, 2^18053568 is an apocalyptic number.

18053568 is a gapful number since it is divisible by the number (18) 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 18053568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27875484).

18053568 is an abundant number, since it is smaller than the sum of its proper divisors (37697400).

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

18053568 is a wasteful number, since it uses less digits than its factorization.

18053568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2442 (or 2429 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 18053568 is about 4248.9490465290. The cubic root of 18053568 is about 262.3338594950. Note that the first 3 decimals are identical.

The spelling of 18053568 in words is "eighteen million, fifty-three thousand, five hundred sixty-eight".