18009260 has 36 divisors (see below), whose sum is σ = 38798928. Its totient is φ = 7021728.

The previous prime is 18009259. The next prime is 18009287. The reversal of 18009260 is 6290081.

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, 36737 + ... + 37223.

It is an arithmetic number, because the mean of its divisors is an integer number (1077748).

Almost surely, 2^18009260 is an apocalyptic number.

18009260 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 18009260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19399464).

18009260 is an abundant number, since it is smaller than the sum of its proper divisors (20789668).

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

18009260 is a wasteful number, since it uses less digits than its factorization.

18009260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582 (or 537 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 18009260 is about 4243.7318482675. The cubic root of 18009260 is about 262.1190725783.

The spelling of 18009260 in words is "eighteen million, nine thousand, two hundred sixty".