16001233 has 4 divisors (see below), whose sum is σ = 16942500. Its totient is φ = 15059968.

The previous prime is 16001231. The next prime is 16001269. The reversal of 16001233 is 33210061.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14493249 + 1507984 = 3807^2 + 1228^2 .

It is a cyclic number.

It is not a de Polignac number, because 16001233 - 2¹ = 16001231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16001231) 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 3 ways as a sum of consecutive naturals, for example, 470608 + ... + 470641.

It is an arithmetic number, because the mean of its divisors is an integer number (4235625).

Almost surely, 2^16001233 is an apocalyptic number.

It is an amenable number.

16001233 is a deficient number, since it is larger than the sum of its proper divisors (941267).

16001233 is an equidigital number, since it uses as much as digits as its factorization.

16001233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941266.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 16001233 is about 4000.1541220308. The cubic root of 16001233 is about 251.9906826571.

Adding to 16001233 its reverse (33210061), we get a palindrome (49211294).

The spelling of 16001233 in words is "sixteen million, one thousand, two hundred thirty-three".