16490217 has 8 divisors (see below), whose sum is σ = 22015296. Its totient is φ = 10979312.

The previous prime is 16490213. The next prime is 16490219. The reversal of 16490217 is 71209461.

It is a happy number.

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 16490217 - 2² = 16490213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16490213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438 + ... + 5759.

It is an arithmetic number, because the mean of its divisors is an integer number (2751912).

Almost surely, 2^16490217 is an apocalyptic number.

It is an amenable number.

16490217 is a deficient number, since it is larger than the sum of its proper divisors (5525079).

16490217 is an equidigital number, since it uses as much as digits as its factorization.

16490217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7087.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 16490217 is about 4060.8148197129. The cubic root of 16490217 is about 254.5318438417.

Adding to 16490217 its reverse (71209461), we get a palindrome (87699678).

The spelling of 16490217 in words is "sixteen million, four hundred ninety thousand, two hundred seventeen".