16442233 has 4 divisors (see below), whose sum is σ = 16453620. Its totient is φ = 16430848.

The previous prime is 16442197. The next prime is 16442287. The reversal of 16442233 is 33224461.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 33224461 = 307 ⋅108223.

It can be written as a sum of positive squares in 2 ways, for example, as 13191424 + 3250809 = 3632^2 + 1803^2 .

It is a cyclic number.

It is not a de Polignac number, because 16442233 - 2⁹ = 16441721 is a prime.

It is a super-3 number, since 3×16442233³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16442198 and 16442207.

It is not an unprimeable number, because it can be changed into a prime (16446233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3148 + ... + 6541.

It is an arithmetic number, because the mean of its divisors is an integer number (4113405).

Almost surely, 2^16442233 is an apocalyptic number.

It is an amenable number.

16442233 is a deficient number, since it is larger than the sum of its proper divisors (11387).

16442233 is an equidigital number, since it uses as much as digits as its factorization.

16442233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11386.

The product of its digits is 3456, while the sum is 25.

The square root of 16442233 is about 4054.9023416107. The cubic root of 16442233 is about 254.2847211262.

Adding to 16442233 its reverse (33224461), we get a palindrome (49666694).

The spelling of 16442233 in words is "sixteen million, four hundred forty-two thousand, two hundred thirty-three".