18002484 has 18 divisors (see below), whose sum is σ = 45506370. Its totient is φ = 6000816.

The previous prime is 18002483. The next prime is 18002489. The reversal of 18002484 is 48420081.

18002484 is a `hidden beast` number, since 180 + 0 + 2 + 484 = 666.

It can be written as a sum of positive squares in only one way, i.e., 14653584 + 3348900 = 3828^2 + 1830^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18002483) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 249999 + ... + 250070.

Almost surely, 2^18002484 is an apocalyptic number.

It is an amenable number.

18002484 is an abundant number, since it is smaller than the sum of its proper divisors (27503886).

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

18002484 is a wasteful number, since it uses less digits than its factorization.

18002484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500079 (or 500074 counting only the distinct ones).

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

The square root of 18002484 is about 4242.9334192278. The cubic root of 18002484 is about 262.0861942768.

The spelling of 18002484 in words is "eighteen million, two thousand, four hundred eighty-four".