16809632 has 48 divisors (see below), whose sum is σ = 38247552. Its totient is φ = 7123200.

The previous prime is 16809629. The next prime is 16809641. The reversal of 16809632 is 23690861.

It is a junction number, because it is equal to n+sod(n) for n = 16809592 and 16809601.

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, 22253 + ... + 22995.

It is an arithmetic number, because the mean of its divisors is an integer number (796824).

Almost surely, 2^16809632 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 16809632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19123776).

16809632 is an abundant number, since it is smaller than the sum of its proper divisors (21437920).

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

16809632 is a wasteful number, since it uses less digits than its factorization.

16809632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861 (or 853 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 16809632 is about 4099.9551217056. The cubic root of 16809632 is about 256.1647702277.

The spelling of 16809632 in words is "sixteen million, eight hundred nine thousand, six hundred thirty-two".