16940222 has 12 divisors (see below), whose sum is σ = 27515880. Its totient is φ = 7818408.

The previous prime is 16940221. The next prime is 16940239. The reversal of 16940222 is 22204961.

It is a super-2 number, since 2×16940222² = 573942242818568, which contains 22 as substring.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 16940191 and 16940200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16940221) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 24722 + ... + 25397.

It is an arithmetic number, because the mean of its divisors is an integer number (2292990).

Almost surely, 2^16940222 is an apocalyptic number.

16940222 is a deficient number, since it is larger than the sum of its proper divisors (10575658).

16940222 is a wasteful number, since it uses less digits than its factorization.

16940222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50147 (or 50134 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 16940222 is about 4115.8500944519. The cubic root of 16940222 is about 256.8264206633.

The spelling of 16940222 in words is "sixteen million, nine hundred forty thousand, two hundred twenty-two".