17980672 has 18 divisors (see below), whose sum is σ = 35891618. Its totient is φ = 8990208.

The previous prime is 17980661. The next prime is 17980709. The reversal of 17980672 is 27608971.

It can be written as a sum of positive squares in only one way, i.e., 17438976 + 541696 = 4176^2 + 736^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34863 + ... + 35374.

Almost surely, 2^17980672 is an apocalyptic number.

It is an amenable number.

17980672 is a deficient number, since it is larger than the sum of its proper divisors (17910946).

17980672 is an frugal number, since it uses more digits than its factorization.

17980672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70253 (or 70239 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 17980672 is about 4240.3622486764. The cubic root of 17980672 is about 261.9803026973.

The spelling of 17980672 in words is "seventeen million, nine hundred eighty thousand, six hundred seventy-two".