18072322 has 8 divisors (see below), whose sum is σ = 27130176. Its totient is φ = 9028932.

The previous prime is 18072293. The next prime is 18072323. The reversal of 18072322 is 22327081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (18072323) 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, 403 + ... + 6025.

It is an arithmetic number, because the mean of its divisors is an integer number (3391272).

Almost surely, 2^18072322 is an apocalyptic number.

18072322 is a deficient number, since it is larger than the sum of its proper divisors (9057854).

18072322 is a wasteful number, since it uses less digits than its factorization.

18072322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7232.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 18072322 is about 4251.1553723664. The cubic root of 18072322 is about 262.4246653055.

The spelling of 18072322 in words is "eighteen million, seventy-two thousand, three hundred twenty-two".