16487856 has 120 divisors (see below), whose sum is σ = 57567744. Its totient is φ = 4279680.

The previous prime is 16487843. The next prime is 16487857. The reversal of 16487856 is 65878461.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (16487857) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10345 + ... + 11831.

Almost surely, 2^16487856 is an apocalyptic number.

16487856 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 16487856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28783872).

16487856 is an abundant number, since it is smaller than the sum of its proper divisors (41079888).

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

16487856 is a wasteful number, since it uses less digits than its factorization.

16487856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1519 (or 1510 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 16487856 is about 4060.5241041028. The cubic root of 16487856 is about 254.5196956618.

The spelling of 16487856 in words is "sixteen million, four hundred eighty-seven thousand, eight hundred fifty-six".