17968442 has 4 divisors (see below), whose sum is σ = 26952666. Its totient is φ = 8984220.

The previous prime is 17968417. The next prime is 17968459. The reversal of 17968442 is 24486971.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24486971 = 97 ⋅252443.

It can be written as a sum of positive squares in only one way, i.e., 17901361 + 67081 = 4231^2 + 259^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 17968442.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4492109 + ... + 4492112.

Almost surely, 2^17968442 is an apocalyptic number.

17968442 is a deficient number, since it is larger than the sum of its proper divisors (8984224).

17968442 is an equidigital number, since it uses as much as digits as its factorization.

17968442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8984223.

The product of its digits is 96768, while the sum is 41.

The square root of 17968442 is about 4238.9199095996. The cubic root of 17968442 is about 261.9208917585.

The spelling of 17968442 in words is "seventeen million, nine hundred sixty-eight thousand, four hundred forty-two".