16981376 has 16 divisors (see below), whose sum is σ = 33830340. Its totient is φ = 8490624.

The previous prime is 16981369. The next prime is 16981379. The reversal of 16981376 is 67318961.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16981379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66206 + ... + 66461.

Almost surely, 2^16981376 is an apocalyptic number.

16981376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16981376 is a deficient number, since it is larger than the sum of its proper divisors (16848964).

16981376 is an equidigital number, since it uses as much as digits as its factorization.

16981376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132681 (or 132669 counting only the distinct ones).

The product of its digits is 54432, while the sum is 41.

The square root of 16981376 is about 4120.8465149772. The cubic root of 16981376 is about 257.0342276023.

The spelling of 16981376 in words is "sixteen million, nine hundred eighty-one thousand, three hundred seventy-six".