20800168 has 16 divisors (see below), whose sum is σ = 39736980. Its totient is φ = 10203648.

The previous prime is 20800159. The next prime is 20800177. The reversal of 20800168 is 86100802.

It is an interprime number because it is at equal distance from previous prime (20800159) and next prime (20800177).

It can be written as a sum of positive squares in 2 ways, for example, as 19166884 + 1633284 = 4378^2 + 1278^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24105 + ... + 24952.

Almost surely, 2^20800168 is an apocalyptic number.

It is an amenable number.

20800168 is a deficient number, since it is larger than the sum of its proper divisors (18936812).

20800168 is a wasteful number, since it uses less digits than its factorization.

20800168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49116 (or 49112 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 20800168 is about 4560.7201185778. The cubic root of 20800168 is about 275.0145138345.

The spelling of 20800168 in words is "twenty million, eight hundred thousand, one hundred sixty-eight".