16644352 has 36 divisors (see below), whose sum is σ = 33685120. Its totient is φ = 8206848.

The previous prime is 16644349. The next prime is 16644367. The reversal of 16644352 is 25344661.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19813 + ... + 20635.

Almost surely, 2^16644352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16644352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16842560).

16644352 is an abundant number, since it is smaller than the sum of its proper divisors (17040768).

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

16644352 is an frugal number, since it uses more digits than its factorization.

16644352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918 (or 904 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 16644352 is about 4079.7490118879. The cubic root of 16644352 is about 255.3224269524.

The spelling of 16644352 in words is "sixteen million, six hundred forty-four thousand, three hundred fifty-two".