16856448 has 64 divisors (see below), whose sum is σ = 51179520. Its totient is φ = 4815360.

The previous prime is 16856443. The next prime is 16856501. The reversal of 16856448 is 84465861.

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

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16856443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 448 + ... + 5823.

It is an arithmetic number, because the mean of its divisors is an integer number (799680).

Almost surely, 2^16856448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16856448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25589760).

16856448 is an abundant number, since it is smaller than the sum of its proper divisors (34323072).

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

16856448 is an equidigital number, since it uses as much as digits as its factorization.

16856448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6295 (or 6283 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The square root of 16856448 is about 4105.6604827969. The cubic root of 16856448 is about 256.4023620571.

It can be divided in two parts, 168 and 56448, that added together give a triangular number (56616 = T₃₃₆).

The spelling of 16856448 in words is "sixteen million, eight hundred fifty-six thousand, four hundred forty-eight".