16690226 has 32 divisors (see below), whose sum is σ = 31622400. Its totient is φ = 6437376.

The previous prime is 16690211. The next prime is 16690229. The reversal of 16690226 is 62209661.

It is a junction number, because it is equal to n+sod(n) for n = 16690192 and 16690201.

It is not an unprimeable number, because it can be changed into a prime (16690229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3950 + ... + 6998.

It is an arithmetic number, because the mean of its divisors is an integer number (988200).

Almost surely, 2^16690226 is an apocalyptic number.

16690226 is a deficient number, since it is larger than the sum of its proper divisors (14932174).

16690226 is a wasteful number, since it uses less digits than its factorization.

16690226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3098.

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

The square root of 16690226 is about 4085.3673029484. The cubic root of 16690226 is about 255.5567790602.

Adding to 16690226 its reverse (62209661), we get a palindrome (78899887).

The spelling of 16690226 in words is "sixteen million, six hundred ninety thousand, two hundred twenty-six".