18824330 has 48 divisors (see below), whose sum is σ = 40420296. Its totient is φ = 6289920.

The previous prime is 18824329. The next prime is 18824341. The reversal of 18824330 is 3342881.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5112121 + 13712209 = 2261^2 + 3703^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18824293 and 18824302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19622 + ... + 20558.

Almost surely, 2^18824330 is an apocalyptic number.

18824330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18824330 is an abundant number, since it is smaller than the sum of its proper divisors (21595966).

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

18824330 is a wasteful number, since it uses less digits than its factorization.

18824330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999 (or 992 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 18824330 is about 4338.7014186275. The cubic root of 18824330 is about 266.0152345845.

The spelling of 18824330 in words is "eighteen million, eight hundred twenty-four thousand, three hundred thirty".