18006524 has 12 divisors (see below), whose sum is σ = 31604664. Its totient is φ = 8976624.

The previous prime is 18006497. The next prime is 18006557. The reversal of 18006524 is 42560081.

It is a junction number, because it is equal to n+sod(n) for n = 18006493 and 18006502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5099 + ... + 7874.

It is an arithmetic number, because the mean of its divisors is an integer number (2633722).

Almost surely, 2^18006524 is an apocalyptic number.

It is an amenable number.

18006524 is a deficient number, since it is larger than the sum of its proper divisors (13598140).

18006524 is a wasteful number, since it uses less digits than its factorization.

18006524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13324 (or 13322 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 18006524 is about 4243.4094782380. The cubic root of 18006524 is about 262.1057980350.

The spelling of 18006524 in words is "eighteen million, six thousand, five hundred twenty-four".