18049760 has 48 divisors (see below), whose sum is σ = 43119216. Its totient is φ = 7139328.

The previous prime is 18049729. The next prime is 18049763. The reversal of 18049760 is 6794081.

It is a self number, because there is not a number n which added to its sum of digits gives 18049760.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18049763) by changing a digit.

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, 14939 + ... + 16101.

It is an arithmetic number, because the mean of its divisors is an integer number (898317).

Almost surely, 2^18049760 is an apocalyptic number.

18049760 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 18049760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21559608).

18049760 is an abundant number, since it is smaller than the sum of its proper divisors (25069456).

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

18049760 is a wasteful number, since it uses less digits than its factorization.

18049760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275 (or 1267 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 18049760 is about 4248.5009120865. The cubic root of 18049760 is about 262.3154136938.

The spelling of 18049760 in words is "eighteen million, forty-nine thousand, seven hundred sixty".