18028241 has 16 divisors (see below), whose sum is σ = 22654080. Its totient is φ = 13937280.

The previous prime is 18028237. The next prime is 18028247. The reversal of 18028241 is 14282081.

It is not a de Polignac number, because 18028241 - 2² = 18028237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18028241.

It is not an unprimeable number, because it can be changed into a prime (18028247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9695 + ... + 11403.

It is an arithmetic number, because the mean of its divisors is an integer number (1415880).

Almost surely, 2^18028241 is an apocalyptic number.

18028241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18028241 is a deficient number, since it is larger than the sum of its proper divisors (4625839).

18028241 is a wasteful number, since it uses less digits than its factorization.

18028241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864.

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 18028241 is about 4245.9676164568. The cubic root of 18028241 is about 262.2111277252.

The spelling of 18028241 in words is "eighteen million, twenty-eight thousand, two hundred forty-one".