18064480 has 72 divisors (see below), whose sum is σ = 49161168. Its totient is φ = 6144768.

The previous prime is 18064471. The next prime is 18064481. The reversal of 18064480 is 8446081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18064481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142177 + ... + 142303.

It is an arithmetic number, because the mean of its divisors is an integer number (682794).

Almost surely, 2^18064480 is an apocalyptic number.

18064480 is a gapful number since it is divisible by the number (10) 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 18064480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24580584).

18064480 is an abundant number, since it is smaller than the sum of its proper divisors (31096688).

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

18064480 is an equidigital number, since it uses as much as digits as its factorization.

18064480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 18064480 is about 4250.2329347931. The cubic root of 18064480 is about 262.3867024294.

The spelling of 18064480 in words is "eighteen million, sixty-four thousand, four hundred eighty".