18287132 has 6 divisors (see below), whose sum is σ = 32002488. Its totient is φ = 9143564.

The previous prime is 18287099. The next prime is 18287149. The reversal of 18287132 is 23178281.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2285888 + ... + 2285895.

It is an arithmetic number, because the mean of its divisors is an integer number (5333748).

Almost surely, 2^18287132 is an apocalyptic number.

It is an amenable number.

18287132 is a deficient number, since it is larger than the sum of its proper divisors (13715356).

18287132 is a wasteful number, since it uses less digits than its factorization.

18287132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4571787 (or 4571785 counting only the distinct ones).

The product of its digits is 5376, while the sum is 32.

The square root of 18287132 is about 4276.3456361711. The cubic root of 18287132 is about 263.4603108538.

The spelling of 18287132 in words is "eighteen million, two hundred eighty-seven thousand, one hundred thirty-two".