16808402 has 18 divisors (see below), whose sum is σ = 27424197. Its totient is φ = 7722936.

The previous prime is 16808381. The next prime is 16808419. The reversal of 16808402 is 20480861.

It can be written as a sum of positive squares in 2 ways, for example, as 14371681 + 2436721 = 3791^2 + 1561^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=2899.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 75263 + ... + 75485.

Almost surely, 2^16808402 is an apocalyptic number.

16808402 is a deficient number, since it is larger than the sum of its proper divisors (10615795).

16808402 is an equidigital number, since it uses as much as digits as its factorization.

16808402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 16808402 is about 4099.8051173196. The cubic root of 16808402 is about 256.1585220173.

The spelling of 16808402 in words is "sixteen million, eight hundred eight thousand, four hundred two".