16864016 has 20 divisors (see below), whose sum is σ = 35187852. Its totient is φ = 7783296.

The previous prime is 16864013. The next prime is 16864033. The reversal of 16864016 is 61046861.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9024016 + 7840000 = 3004^2 + 2800^2 .

It is not an unprimeable number, because it can be changed into a prime (16864013) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 40331 + ... + 40746.

Almost surely, 2^16864016 is an apocalyptic number.

16864016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16864016 is an abundant number, since it is smaller than the sum of its proper divisors (18323836).

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

16864016 is a wasteful number, since it uses less digits than its factorization.

16864016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81098 (or 81092 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 16864016 is about 4106.5820337599. The cubic root of 16864016 is about 256.4407284387.

The spelling of 16864016 in words is "sixteen million, eight hundred sixty-four thousand, sixteen".