18240282 has 32 divisors (see below), whose sum is σ = 40824000. Its totient is φ = 6036624.

The previous prime is 18240253. The next prime is 18240293. The reversal of 18240282 is 28204281.

18240282 is a `hidden beast` number, since 182 + 402 + 82 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 6913 + ... + 9179.

It is an arithmetic number, because the mean of its divisors is an integer number (1275750).

Almost surely, 2^18240282 is an apocalyptic number.

18240282 is an abundant number, since it is smaller than the sum of its proper divisors (22583718).

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

18240282 is a wasteful number, since it uses less digits than its factorization.

18240282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2427 (or 2421 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 18240282 is about 4270.8643153348. The cubic root of 18240282 is about 263.2351311802.

The spelling of 18240282 in words is "eighteen million, two hundred forty thousand, two hundred eighty-two".