16800520 has 32 divisors (see below), whose sum is σ = 41238720. Its totient is φ = 6109120.

The previous prime is 16800473. The next prime is 16800569. The reversal of 16800520 is 2500861.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 16800491 and 16800500.

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 7 ways as a sum of consecutive naturals, for example, 18652 + ... + 19531.

It is an arithmetic number, because the mean of its divisors is an integer number (1288710).

Almost surely, 2^16800520 is an apocalyptic number.

16800520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16800520 is an abundant number, since it is smaller than the sum of its proper divisors (24438200).

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

16800520 is a wasteful number, since it uses less digits than its factorization.

16800520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38205 (or 38201 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 16800520 is about 4098.8437393977. The cubic root of 16800520 is about 256.1184754352.

The spelling of 16800520 in words is "sixteen million, eight hundred thousand, five hundred twenty".