16940022 has 64 divisors (see below), whose sum is σ = 38928384. Its totient is φ = 4868640.

The previous prime is 16940009. The next prime is 16940057. The reversal of 16940022 is 22004961.

It is a junction number, because it is equal to n+sod(n) for n = 16939974 and 16940001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133323 + ... + 133449.

It is an arithmetic number, because the mean of its divisors is an integer number (608256).

Almost surely, 2^16940022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16940022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19464192).

16940022 is an abundant number, since it is smaller than the sum of its proper divisors (21988362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16940022 is a wasteful number, since it uses less digits than its factorization.

16940022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 16940022 is about 4115.8257980629. The cubic root of 16940022 is about 256.8254099428.

Adding to 16940022 its reverse (22004961), we get a palindrome (38944983).

The spelling of 16940022 in words is "sixteen million, nine hundred forty thousand, twenty-two".