16271680 has 28 divisors (see below), whose sum is σ = 38747700. Its totient is φ = 6508544.

The previous prime is 16271663. The next prime is 16271699. The reversal of 16271680 is 8617261.

It can be written as a sum of positive squares in 2 ways, for example, as 8386816 + 7884864 = 2896^2 + 2808^2 .

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, 25105 + ... + 25744.

Almost surely, 2^16271680 is an apocalyptic number.

16271680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16271680 is an abundant number, since it is smaller than the sum of its proper divisors (22476020).

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

16271680 is an equidigital number, since it uses as much as digits as its factorization.

16271680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50866 (or 50856 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 16271680 is about 4033.8170508837. The cubic root of 16271680 is about 253.4024434409.

The spelling of 16271680 in words is "sixteen million, two hundred seventy-one thousand, six hundred eighty".