18069280 has 48 divisors (see below), whose sum is σ = 44077824. Its totient is φ = 6992640.

The previous prime is 18069277. The next prime is 18069299. The reversal of 18069280 is 8296081.

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, 3139 + ... + 6781.

It is an arithmetic number, because the mean of its divisors is an integer number (918288).

Almost surely, 2^18069280 is an apocalyptic number.

18069280 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 18069280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22038912).

18069280 is an abundant number, since it is smaller than the sum of its proper divisors (26008544).

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

18069280 is a wasteful number, since it uses less digits than its factorization.

18069280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3689 (or 3681 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 18069280 is about 4250.7975722210. The cubic root of 18069280 is about 262.4099403829.

The spelling of 18069280 in words is "eighteen million, sixty-nine thousand, two hundred eighty".