18022241 has 8 divisors (see below), whose sum is σ = 19029120. Its totient is φ = 17021232.

The previous prime is 18022231. The next prime is 18022243. The reversal of 18022241 is 14222081.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18022241 - 2⁶ = 18022177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18022243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5816 + ... + 8358.

It is an arithmetic number, because the mean of its divisors is an integer number (2378640).

Almost surely, 2^18022241 is an apocalyptic number.

It is an amenable number.

18022241 is a deficient number, since it is larger than the sum of its proper divisors (1006879).

18022241 is a wasteful number, since it uses less digits than its factorization.

18022241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2935.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 18022241 is about 4245.2610049324. The cubic root of 18022241 is about 262.1820355667.

The spelling of 18022241 in words is "eighteen million, twenty-two thousand, two hundred forty-one".