18328022 has 4 divisors (see below), whose sum is σ = 27492036. Its totient is φ = 9164010.

The previous prime is 18328021. The next prime is 18328031. The reversal of 18328022 is 22082381.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 18327982 and 18328000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18328021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4582004 + ... + 4582007.

It is an arithmetic number, because the mean of its divisors is an integer number (6873009).

Almost surely, 2^18328022 is an apocalyptic number.

18328022 is a deficient number, since it is larger than the sum of its proper divisors (9164014).

18328022 is an equidigital number, since it uses as much as digits as its factorization.

18328022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9164013.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 18328022 is about 4281.1239178515. The cubic root of 18328022 is about 263.6565302989.

The spelling of 18328022 in words is "eighteen million, three hundred twenty-eight thousand, twenty-two".