16868736 has 80 divisors (see below), whose sum is σ = 50231940. Its totient is φ = 5619456.

The previous prime is 16868701. The next prime is 16868759. The reversal of 16868736 is 63786861.

It is a junction number, because it is equal to n+sod(n) for n = 16868691 and 16868700.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 9555 + ... + 11181.

Almost surely, 2^16868736 is an apocalyptic number.

16868736 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 16868736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25115970).

16868736 is an abundant number, since it is smaller than the sum of its proper divisors (33363204).

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

16868736 is an equidigital number, since it uses as much as digits as its factorization.

16868736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653 (or 1632 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 16868736 is about 4107.1566807221. The cubic root of 16868736 is about 256.4646509202.

The spelling of 16868736 in words is "sixteen million, eight hundred sixty-eight thousand, seven hundred thirty-six".