16806020 has 72 divisors (see below), whose sum is σ = 44815680. Its totient is φ = 5234880.

The previous prime is 16806019. The next prime is 16806043. The reversal of 16806020 is 2060861.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10001 + ... + 11559.

It is an arithmetic number, because the mean of its divisors is an integer number (622440).

Almost surely, 2^16806020 is an apocalyptic number.

16806020 is a gapful number since it is divisible by the number (10) 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 16806020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22407840).

16806020 is an abundant number, since it is smaller than the sum of its proper divisors (28009660).

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

16806020 is a wasteful number, since it uses less digits than its factorization.

16806020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1593 (or 1584 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 16806020 is about 4099.5146054137. The cubic root of 16806020 is about 256.1464209576.

Adding to 16806020 its reverse (2060861), we get a palindrome (18866881).

The spelling of 16806020 in words is "sixteen million, eight hundred six thousand, twenty".