17997648 has 40 divisors (see below), whose sum is σ = 47157696. Its totient is φ = 5913600.

The previous prime is 17997643. The next prime is 17997649. The reversal of 17997648 is 84679971.

It is a self number, because there is not a number n which added to its sum of digits gives 17997648.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17997641) 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 7 ways as a sum of consecutive naturals, for example, 768 + ... + 6048.

Almost surely, 2^17997648 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 17997648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23578848).

17997648 is an abundant number, since it is smaller than the sum of its proper divisors (29160048).

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

17997648 is a wasteful number, since it uses less digits than its factorization.

17997648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5363 (or 5357 counting only the distinct ones).

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

The square root of 17997648 is about 4242.3634922057. The cubic root of 17997648 is about 262.0627241389.

The spelling of 17997648 in words is "seventeen million, nine hundred ninety-seven thousand, six hundred forty-eight".