18028324 has 24 divisors (see below), whose sum is σ = 32629688. Its totient is φ = 8709120.

The previous prime is 18028319. The next prime is 18028337. The reversal of 18028324 is 42382081.

It can be written as a sum of positive squares in 4 ways, for example, as 656100 + 17372224 = 810^2 + 4168^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18028292 and 18028301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26452 + ... + 27124.

Almost surely, 2^18028324 is an apocalyptic number.

It is an amenable number.

18028324 is a deficient number, since it is larger than the sum of its proper divisors (14601364).

18028324 is a wasteful number, since it uses less digits than its factorization.

18028324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895 (or 893 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 18028324 is about 4245.9773904250. The cubic root of 18028324 is about 262.2115301215.

The spelling of 18028324 in words is "eighteen million, twenty-eight thousand, three hundred twenty-four".