16890233 has 2 divisors, whose sum is σ = 16890234. Its totient is φ = 16890232.

The previous prime is 16890191. The next prime is 16890277. The reversal of 16890233 is 33209861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11377129 + 5513104 = 3373^2 + 2348^2 .

It is a cyclic number.

It is not a de Polignac number, because 16890233 - 2⁶ = 16890169 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16890233.

It is not a weakly prime, because it can be changed into another prime (16890283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8445116 + 8445117.

It is an arithmetic number, because the mean of its divisors is an integer number (8445117).

Almost surely, 2^16890233 is an apocalyptic number.

It is an amenable number.

16890233 is a deficient number, since it is larger than the sum of its proper divisors (1).

16890233 is an equidigital number, since it uses as much as digits as its factorization.

16890233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 16890233 is about 4109.7728647700. The cubic root of 16890233 is about 256.5735482376.

The spelling of 16890233 in words is "sixteen million, eight hundred ninety thousand, two hundred thirty-three".