16971056 has 40 divisors (see below), whose sum is σ = 34712064. Its totient is φ = 8022080.

The previous prime is 16971037. The next prime is 16971091. The reversal of 16971056 is 65017961.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39161 + ... + 39591.

Almost surely, 2^16971056 is an apocalyptic number.

16971056 is a gapful number since it is divisible by the number (16) 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 16971056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17356032).

16971056 is an abundant number, since it is smaller than the sum of its proper divisors (17741008).

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

16971056 is a wasteful number, since it uses less digits than its factorization.

16971056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569 (or 563 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 16971056 is about 4119.5941547682. The cubic root of 16971056 is about 256.9821483762.

The spelling of 16971056 in words is "sixteen million, nine hundred seventy-one thousand, fifty-six".