18282040 has 32 divisors (see below), whose sum is σ = 47011680. Its totient is φ = 6268032.

The previous prime is 18282029. The next prime is 18282049. The reversal of 18282040 is 4028281.

It is a junction number, because it is equal to n+sod(n) for n = 18281996 and 18282014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18282049) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 32367 + ... + 32926.

It is an arithmetic number, because the mean of its divisors is an integer number (1469115).

Almost surely, 2^18282040 is an apocalyptic number.

18282040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18282040 is an abundant number, since it is smaller than the sum of its proper divisors (28729640).

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

18282040 is a wasteful number, since it uses less digits than its factorization.

18282040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65311 (or 65307 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 18282040 is about 4275.7502265684. The cubic root of 18282040 is about 263.4358553253.

The spelling of 18282040 in words is "eighteen million, two hundred eighty-two thousand, forty".