16281226 has 8 divisors (see below), whose sum is σ = 26300484. Its totient is φ = 7514400.

The previous prime is 16281191. The next prime is 16281247. The reversal of 16281226 is 62218261.

It is a Cunningham number, because it is equal to 4035²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 16281225 + 1 = 4035^2 + 1^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 16281194 and 16281203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313075 + ... + 313126.

Almost surely, 2^16281226 is an apocalyptic number.

16281226 is a deficient number, since it is larger than the sum of its proper divisors (10019258).

16281226 is a wasteful number, since it uses less digits than its factorization.

16281226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626216.

The product of its digits is 2304, while the sum is 28.

The square root of 16281226 is about 4035.0001239157. Note that the first 3 decimals coincide. The cubic root of 16281226 is about 253.4519877379.

Adding to 16281226 its reverse (62218261), we get a palindrome (78499487).

The spelling of 16281226 in words is "sixteen million, two hundred eighty-one thousand, two hundred twenty-six".