16636226 has 4 divisors (see below), whose sum is σ = 24954342. Its totient is φ = 8318112.

The previous prime is 16636219. The next prime is 16636237. The reversal of 16636226 is 62263661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62263661 = 5737 ⋅10853.

It can be written as a sum of positive squares in only one way, i.e., 16410601 + 225625 = 4051^2 + 475^2 .

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 16636192 and 16636201.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4159055 + ... + 4159058.

Almost surely, 2^16636226 is an apocalyptic number.

16636226 is a deficient number, since it is larger than the sum of its proper divisors (8318116).

16636226 is an equidigital number, since it uses as much as digits as its factorization.

16636226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8318115.

The product of its digits is 15552, while the sum is 32.

The square root of 16636226 is about 4078.7529957084. The cubic root of 16636226 is about 255.2808695566.

Adding to 16636226 its reverse (62263661), we get a palindrome (78899887).

The spelling of 16636226 in words is "sixteen million, six hundred thirty-six thousand, two hundred twenty-six".