16489856 has 32 divisors (see below), whose sum is σ = 33562080. Its totient is φ = 8066560.

The previous prime is 16489843. The next prime is 16489883. The reversal of 16489856 is 65898461.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a self number, because there is not a number n which added to its sum of digits gives 16489856.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4646 + ... + 7386.

It is an arithmetic number, because the mean of its divisors is an integer number (1048815).

Almost surely, 2^16489856 is an apocalyptic number.

16489856 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 16489856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16781040).

16489856 is an abundant number, since it is smaller than the sum of its proper divisors (17072224).

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

16489856 is an equidigital number, since it uses as much as digits as its factorization.

16489856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2802 (or 2790 counting only the distinct ones).

The product of its digits is 414720, while the sum is 47.

The square root of 16489856 is about 4060.7703702623. The cubic root of 16489856 is about 254.5299864441.

The spelling of 16489856 in words is "sixteen million, four hundred eighty-nine thousand, eight hundred fifty-six".