16999422 has 64 divisors (see below), whose sum is σ = 39916800. Its totient is φ = 4769280.

The previous prime is 16999399. The next prime is 16999453. The reversal of 16999422 is 22499961.

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, 122229 + ... + 122367.

It is an arithmetic number, because the mean of its divisors is an integer number (623700).

Almost surely, 2^16999422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16999422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19958400).

16999422 is an abundant number, since it is smaller than the sum of its proper divisors (22917378).

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

16999422 is a wasteful number, since it uses less digits than its factorization.

16999422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281.

The product of its digits is 69984, while the sum is 42.

The square root of 16999422 is about 4123.0355322262. The cubic root of 16999422 is about 257.1252449137.

The spelling of 16999422 in words is "sixteen million, nine hundred ninety-nine thousand, four hundred twenty-two".