17328961 has 4 divisors (see below), whose sum is σ = 18661972. Its totient is φ = 15995952.

The previous prime is 17328919. The next prime is 17328973. The reversal of 17328961 is 16982371.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6471936 + 10857025 = 2544^2 + 3295^2 .

It is a cyclic number.

It is not a de Polignac number, because 17328961 - 2⁹ = 17328449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 17328961.

It is not an unprimeable number, because it can be changed into a prime (17328901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666486 + ... + 666511.

It is an arithmetic number, because the mean of its divisors is an integer number (4665493).

Almost surely, 2^17328961 is an apocalyptic number.

It is an amenable number.

17328961 is a deficient number, since it is larger than the sum of its proper divisors (1333011).

17328961 is a wasteful number, since it uses less digits than its factorization.

17328961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333010.

The product of its digits is 18144, while the sum is 37.

The square root of 17328961 is about 4162.8068655656. The cubic root of 17328961 is about 258.7761068044.

The spelling of 17328961 in words is "seventeen million, three hundred twenty-eight thousand, nine hundred sixty-one".