17994768 has 80 divisors (see below), whose sum is σ = 51264576. Its totient is φ = 5393920.

The previous prime is 17994731. The next prime is 17994791. The reversal of 17994768 is 86749971.

Its product of digits (762048) is a multiple of the sum of its prime factors (392).

It is a self number, because there is not a number n which added to its sum of digits gives 17994768.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91246 + ... + 91442.

Almost surely, 2^17994768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 17994768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25632288).

17994768 is an abundant number, since it is smaller than the sum of its proper divisors (33269808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

17994768 is a wasteful number, since it uses less digits than its factorization.

17994768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392 (or 386 counting only the distinct ones).

The product of its digits is 762048, while the sum is 51.

The square root of 17994768 is about 4242.0240451935. The cubic root of 17994768 is about 262.0487448881.

The spelling of 17994768 in words is "seventeen million, nine hundred ninety-four thousand, seven hundred sixty-eight".