16380233 has 8 divisors (see below), whose sum is σ = 17142408. Its totient is φ = 15634944.

The previous prime is 16380191. The next prime is 16380253. The reversal of 16380233 is 33208361.

It can be written as a sum of positive squares in 4 ways, for example, as 8690704 + 7689529 = 2948^2 + 2773^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16380233 - 2¹² = 16376137 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 (16380253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2216 + ... + 6137.

It is an arithmetic number, because the mean of its divisors is an integer number (2142801).

Almost surely, 2^16380233 is an apocalyptic number.

It is an amenable number.

16380233 is a deficient number, since it is larger than the sum of its proper divisors (762175).

16380233 is an equidigital number, since it uses as much as digits as its factorization.

16380233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8443.

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

The square root of 16380233 is about 4047.2500540490. The cubic root of 16380233 is about 253.9647015242.

Adding to 16380233 its reverse (33208361), we get a palindrome (49588594).

The spelling of 16380233 in words is "sixteen million, three hundred eighty thousand, two hundred thirty-three".