16856632 has 32 divisors (see below), whose sum is σ = 34372800. Its totient is φ = 7703424.

The previous prime is 16856621. The next prime is 16856641. The reversal of 16856632 is 23665861.

It is a junction number, because it is equal to n+sod(n) for n = 16856591 and 16856600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10593 + ... + 12079.

It is an arithmetic number, because the mean of its divisors is an integer number (1074150).

Almost surely, 2^16856632 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 16856632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17186400).

16856632 is an abundant number, since it is smaller than the sum of its proper divisors (17516168).

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

16856632 is a wasteful number, since it uses less digits than its factorization.

16856632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615 (or 1611 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 16856632 is about 4105.6828908234. The cubic root of 16856632 is about 256.4032949912.

The spelling of 16856632 in words is "sixteen million, eight hundred fifty-six thousand, six hundred thirty-two".