18040524 has 12 divisors (see below), whose sum is σ = 42094584. Its totient is φ = 6013504.

The previous prime is 18040513. The next prime is 18040531. The reversal of 18040524 is 42504081.

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 18040494 and 18040503.

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 3 ways as a sum of consecutive naturals, for example, 751677 + ... + 751700.

It is an arithmetic number, because the mean of its divisors is an integer number (3507882).

Almost surely, 2^18040524 is an apocalyptic number.

It is an amenable number.

18040524 is an abundant number, since it is smaller than the sum of its proper divisors (24054060).

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

18040524 is a wasteful number, since it uses less digits than its factorization.

18040524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503384 (or 1503382 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 18040524 is about 4247.4138013620. The cubic root of 18040524 is about 262.2706640957.

It can be divided in two parts, 180 and 40524, that added together give a palindrome (40704).

The spelling of 18040524 in words is "eighteen million, forty thousand, five hundred twenty-four".