16988968 has 16 divisors (see below), whose sum is σ = 32184180. Its totient is φ = 8406528.

The previous prime is 16988947. The next prime is 16988987. The reversal of 16988968 is 86988961.

It can be written as a sum of positive squares in 2 ways, for example, as 16793604 + 195364 = 4098^2 + 442^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10171 + ... + 11722.

Almost surely, 2^16988968 is an apocalyptic number.

It is an amenable number.

16988968 is a deficient number, since it is larger than the sum of its proper divisors (15195212).

16988968 is a wasteful number, since it uses less digits than its factorization.

16988968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21996 (or 21992 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 55.

The square root of 16988968 is about 4121.7675819968. The cubic root of 16988968 is about 257.0725266800.

It can be divided in two parts, 16988 and 968, that added together give a square (17956 = 134²).

The spelling of 16988968 in words is "sixteen million, nine hundred eighty-eight thousand, nine hundred sixty-eight".