16644452 has 12 divisors (see below), whose sum is σ = 31775856. Its totient is φ = 7565640.

The previous prime is 16644449. The next prime is 16644469. The reversal of 16644452 is 25444661.

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, 189098 + ... + 189185.

It is an arithmetic number, because the mean of its divisors is an integer number (2647988).

Almost surely, 2^16644452 is an apocalyptic number.

It is an amenable number.

16644452 is a deficient number, since it is larger than the sum of its proper divisors (15131404).

16644452 is a wasteful number, since it uses less digits than its factorization.

16644452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378298 (or 378296 counting only the distinct ones).

The product of its digits is 23040, while the sum is 32.

The square root of 16644452 is about 4079.7612675253. The cubic root of 16644452 is about 255.3229382808.

It can be divided in two parts, 1664 and 4452, that added together give a palindrome (6116).

The spelling of 16644452 in words is "sixteen million, six hundred forty-four thousand, four hundred fifty-two".