16317680 has 20 divisors (see below), whose sum is σ = 37938792. Its totient is φ = 6527040.

The previous prime is 16317677. The next prime is 16317733. The reversal of 16317680 is 8671361.

It is a tau number, because it is divible by the number of its divisors (20).

It is a zygodrome in base 2.

It is a congruent number.

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, 101906 + ... + 102065.

Almost surely, 2^16317680 is an apocalyptic number.

16317680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16317680 is an abundant number, since it is smaller than the sum of its proper divisors (21621112).

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

16317680 is a wasteful number, since it uses less digits than its factorization.

16317680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203984 (or 203978 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 16317680 is about 4039.5148223518. The cubic root of 16317680 is about 253.6410081396.

The spelling of 16317680 in words is "sixteen million, three hundred seventeen thousand, six hundred eighty".