18080340 has 48 divisors (see below), whose sum is σ = 52375680. Its totient is φ = 4654720.

The previous prime is 18080329. The next prime is 18080351. The reversal of 18080340 is 4308081.

It is an interprime number because it is at equal distance from previous prime (18080329) and next prime (18080351).

It is a self number, because there is not a number n which added to its sum of digits gives 18080340.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 3456 + ... + 6935.

It is an arithmetic number, because the mean of its divisors is an integer number (1091160).

Almost surely, 2^18080340 is an apocalyptic number.

18080340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18080340 is an abundant number, since it is smaller than the sum of its proper divisors (34295340).

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

18080340 is a wasteful number, since it uses less digits than its factorization.

18080340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10432 (or 10430 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 18080340 is about 4252.0983055428. The cubic root of 18080340 is about 262.4634688392.

The spelling of 18080340 in words is "eighteen million, eighty thousand, three hundred forty".