18324980 has 24 divisors (see below), whose sum is σ = 40746888. Its totient is φ = 6898688.

The previous prime is 18324973. The next prime is 18325001. The reversal of 18324980 is 8942381.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5779216 + 12545764 = 2404^2 + 3542^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18324980.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26609 + ... + 27288.

It is an arithmetic number, because the mean of its divisors is an integer number (1697787).

Almost surely, 2^18324980 is an apocalyptic number.

18324980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18324980 is an abundant number, since it is smaller than the sum of its proper divisors (22421908).

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

18324980 is a wasteful number, since it uses less digits than its factorization.

18324980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53923 (or 53921 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 18324980 is about 4280.7686225724. The cubic root of 18324980 is about 263.6419426629.

The spelling of 18324980 in words is "eighteen million, three hundred twenty-four thousand, nine hundred eighty".