18208064 has 56 divisors (see below), whose sum is σ = 41818560. Its totient is φ = 7704576.

The previous prime is 18208063. The next prime is 18208079. The reversal of 18208064 is 46080281.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18208063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43247 + ... + 43665.

It is an arithmetic number, because the mean of its divisors is an integer number (746760).

Almost surely, 2^18208064 is an apocalyptic number.

18208064 is a gapful number since it is divisible by the number (14) 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 18208064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20909280).

18208064 is an abundant number, since it is smaller than the sum of its proper divisors (23610496).

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

18208064 is an equidigital number, since it uses as much as digits as its factorization.

18208064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535 (or 525 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 18208064 is about 4267.0908122514. The cubic root of 18208064 is about 263.0800548558.

The spelling of 18208064 in words is "eighteen million, two hundred eight thousand, sixty-four".