16690422 has 32 divisors (see below), whose sum is σ = 38283264. Its totient is φ = 4752000.

The previous prime is 16690411. The next prime is 16690423. The reversal of 16690422 is 22409661.

It is a self number, because there is not a number n which added to its sum of digits gives 16690422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16690423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16347 + ... + 17337.

It is an arithmetic number, because the mean of its divisors is an integer number (1196352).

Almost surely, 2^16690422 is an apocalyptic number.

16690422 is an abundant number, since it is smaller than the sum of its proper divisors (21592842).

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

16690422 is a wasteful number, since it uses less digits than its factorization.

16690422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 16690422 is about 4085.3912909292. The cubic root of 16690422 is about 255.5577794247.

The spelling of 16690422 in words is "sixteen million, six hundred ninety thousand, four hundred twenty-two".