16729680 has 80 divisors (see below), whose sum is σ = 56585664. Its totient is φ = 4055040.

The previous prime is 16729679. The next prime is 16729711. The reversal of 16729680 is 8692761.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 529 + ... + 5808.

Almost surely, 2^16729680 is an apocalyptic number.

16729680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16729680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28292832).

16729680 is an abundant number, since it is smaller than the sum of its proper divisors (39855984).

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

16729680 is a wasteful number, since it uses less digits than its factorization.

16729680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6364 (or 6358 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 16729680 is about 4090.1931494735. The cubic root of 16729680 is about 255.7579906899.

The spelling of 16729680 in words is "sixteen million, seven hundred twenty-nine thousand, six hundred eighty".