18712324 has 12 divisors (see below), whose sum is σ = 32903248. Its totient is φ = 9311400.

The previous prime is 18712303. The next prime is 18712327. The reversal of 18712324 is 42321781.

It is a junction number, because it is equal to n+sod(n) for n = 18712292 and 18712301.

It is not an unprimeable number, because it can be changed into a prime (18712327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10242 + ... + 11929.

Almost surely, 2^18712324 is an apocalyptic number.

It is an amenable number.

18712324 is a deficient number, since it is larger than the sum of its proper divisors (14190924).

18712324 is a wasteful number, since it uses less digits than its factorization.

18712324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22386 (or 22384 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 18712324 is about 4325.7743815414. The cubic root of 18712324 is about 265.4865819817.

The spelling of 18712324 in words is "eighteen million, seven hundred twelve thousand, three hundred twenty-four".