16646452 has 24 divisors (see below), whose sum is σ = 29896776. Its totient is φ = 8107008.

The previous prime is 16646449. The next prime is 16646453. The reversal of 16646452 is 25464661.

It can be written as a sum of positive squares in 4 ways, for example, as 853776 + 15792676 = 924^2 + 3974^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16646453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49228 + ... + 49564.

It is an arithmetic number, because the mean of its divisors is an integer number (1245699).

Almost surely, 2^16646452 is an apocalyptic number.

It is an amenable number.

16646452 is a deficient number, since it is larger than the sum of its proper divisors (13250324).

16646452 is a wasteful number, since it uses less digits than its factorization.

16646452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627 (or 625 counting only the distinct ones).

The product of its digits is 34560, while the sum is 34.

The square root of 16646452 is about 4080.0063725440. The cubic root of 16646452 is about 255.3331644195. Note that the first 3 decimals are identical.

The spelling of 16646452 in words is "sixteen million, six hundred forty-six thousand, four hundred fifty-two".