16641233 has 6 divisors (see below), whose sum is σ = 19358226. Its totient is φ = 14263872.

The previous prime is 16641221. The next prime is 16641239. The reversal of 16641233 is 33214661.

It can be written as a sum of positive squares in only one way, i.e., 14500864 + 2140369 = 3808^2 + 1463^2 .

It is not a de Polignac number, because 16641233 - 2⁴ = 16641217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16641239) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 169760 + ... + 169857.

It is an arithmetic number, because the mean of its divisors is an integer number (3226371).

Almost surely, 2^16641233 is an apocalyptic number.

It is an amenable number.

16641233 is a deficient number, since it is larger than the sum of its proper divisors (2716993).

16641233 is an equidigital number, since it uses as much as digits as its factorization.

16641233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339631 (or 339624 counting only the distinct ones).

The product of its digits is 2592, while the sum is 26.

The square root of 16641233 is about 4079.3667400713. The cubic root of 16641233 is about 255.3064775902.

Adding to 16641233 its reverse (33214661), we get a palindrome (49855894).

The spelling of 16641233 in words is "sixteen million, six hundred forty-one thousand, two hundred thirty-three".