16656226 has 12 divisors (see below), whose sum is σ = 26541378. Its totient is φ = 7837952.

The previous prime is 16656223. The next prime is 16656239. The reversal of 16656226 is 62265661.

It can be written as a sum of positive squares in 3 ways, for example, as 15992001 + 664225 = 3999^2 + 815^2 .

It is a super-3 number, since 3×16656226³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 16656191 and 16656200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16656223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13831 + ... + 14986.

Almost surely, 2^16656226 is an apocalyptic number.

16656226 is a deficient number, since it is larger than the sum of its proper divisors (9885152).

16656226 is a wasteful number, since it uses less digits than its factorization.

16656226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28853 (or 28836 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 16656226 is about 4081.2039890209. The cubic root of 16656226 is about 255.3831277805.

The spelling of 16656226 in words is "sixteen million, six hundred fifty-six thousand, two hundred twenty-six".