2180304 has 120 divisors (see below), whose sum is σ = 7350720. Its totient is φ = 616896.

The previous prime is 2180303. The next prime is 2180329. The reversal of 2180304 is 4030812.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2180303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21117 + ... + 21219.

It is an arithmetic number, because the mean of its divisors is an integer number (61256).

2^2180304 is an apocalyptic number.

2180304 is a gapful number since it is divisible by the number (24) 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 2180304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3675360).

2180304 is an abundant number, since it is smaller than the sum of its proper divisors (5170416).

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

2180304 is a wasteful number, since it uses less digits than its factorization.

2180304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2180304 is about 1476.5852498247. The cubic root of 2180304 is about 129.6698526043.

The spelling of 2180304 in words is "two million, one hundred eighty thousand, three hundred four".