16728671 has 2 divisors, whose sum is σ = 16728672. Its totient is φ = 16728670.

The previous prime is 16728667. The next prime is 16728689. The reversal of 16728671 is 17682761.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16728671 - 2² = 16728667 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16728601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8364335 + 8364336.

It is an arithmetic number, because the mean of its divisors is an integer number (8364336).

Almost surely, 2^16728671 is an apocalyptic number.

16728671 is a deficient number, since it is larger than the sum of its proper divisors (1).

16728671 is an equidigital number, since it uses as much as digits as its factorization.

16728671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 38.

The square root of 16728671 is about 4090.0698038053. The cubic root of 16728671 is about 255.7528488302.

The spelling of 16728671 in words is "sixteen million, seven hundred twenty-eight thousand, six hundred seventy-one".