17994045 has 24 divisors (see below), whose sum is σ = 30394656. Its totient is φ = 9088992.

The previous prime is 17994023. The next prime is 17994077. The reversal of 17994045 is 54049971.

It is not a de Polignac number, because 17994045 - 2⁵ = 17994013 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 17993994 and 17994012.

It is a congruent number.

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 in 23 ways as a sum of consecutive naturals, for example, 3754 + ... + 7076.

It is an arithmetic number, because the mean of its divisors is an integer number (1266444).

Almost surely, 2^17994045 is an apocalyptic number.

17994045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

17994045 is a deficient number, since it is larger than the sum of its proper divisors (12400611).

17994045 is a wasteful number, since it uses less digits than its factorization.

17994045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3369 (or 3350 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 17994045 is about 4241.9388255844. The cubic root of 17994045 is about 262.0452352795.

The spelling of 17994045 in words is "seventeen million, nine hundred ninety-four thousand, forty-five".