16516872 has 80 divisors (see below), whose sum is σ = 47044800. Its totient is φ = 5412960.

The previous prime is 16516861. The next prime is 16516889. The reversal of 16516872 is 27861561.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (20160) is a multiple of the sum of its prime factors (448).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 45829 + ... + 46187.

It is an arithmetic number, because the mean of its divisors is an integer number (588060).

Almost surely, 2^16516872 is an apocalyptic number.

16516872 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 16516872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23522400).

16516872 is an abundant number, since it is smaller than the sum of its proper divisors (30527928).

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

16516872 is a wasteful number, since it uses less digits than its factorization.

16516872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448 (or 435 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 16516872 is about 4064.0954713195. The cubic root of 16516872 is about 254.6689128694.

The spelling of 16516872 in words is "sixteen million, five hundred sixteen thousand, eight hundred seventy-two".