18240106 has 8 divisors (see below), whose sum is σ = 27490464. Its totient is φ = 9076620.

The previous prime is 18240097. The next prime is 18240107. The reversal of 18240106 is 60104281.

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

It is a super-3 number, since 3×18240106³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (18240107) 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 3 ways as a sum of consecutive naturals, for example, 21190 + ... + 22033.

It is an arithmetic number, because the mean of its divisors is an integer number (3436308).

Almost surely, 2^18240106 is an apocalyptic number.

18240106 is a deficient number, since it is larger than the sum of its proper divisors (9250358).

18240106 is a wasteful number, since it uses less digits than its factorization.

18240106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43436.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 18240106 is about 4270.8437105565. The cubic root of 18240106 is about 263.2342845279.

Adding to 18240106 its reverse (60104281), we get a palindrome (78344387).

The spelling of 18240106 in words is "eighteen million, two hundred forty thousand, one hundred six".