16851072 has 64 divisors (see below), whose sum is σ = 51163200. Its totient is φ = 4813824.

The previous prime is 16851071. The next prime is 16851077. The reversal of 16851072 is 27015861.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (16851071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 447 + ... + 5822.

It is an arithmetic number, because the mean of its divisors is an integer number (799425).

Almost surely, 2^16851072 is an apocalyptic number.

16851072 is a gapful number since it is divisible by the number (12) 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 16851072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25581600).

16851072 is an abundant number, since it is smaller than the sum of its proper divisors (34312128).

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

16851072 is an equidigital number, since it uses as much as digits as its factorization.

16851072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6293 (or 6281 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 16851072 is about 4105.0057247220. The cubic root of 16851072 is about 256.3751011604.

The spelling of 16851072 in words is "sixteen million, eight hundred fifty-one thousand, seventy-two".