16602222 has 48 divisors (see below), whose sum is σ = 41109120. Its totient is φ = 4376736.

The previous prime is 16602211. The next prime is 16602263. The reversal of 16602222 is 22220661.

It is a Harshad number since it is a multiple of its sum of digits (21).

16602222 is a modest number, since divided by 2222 gives 1660 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5929 + ... + 8267.

It is an arithmetic number, because the mean of its divisors is an integer number (856440).

Almost surely, 2^16602222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16602222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20554560).

16602222 is an abundant number, since it is smaller than the sum of its proper divisors (24506898).

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

16602222 is a wasteful number, since it uses less digits than its factorization.

16602222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2377 (or 2364 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 16602222 is about 4074.5824325936. The cubic root of 16602222 is about 255.1068218349.

Adding to 16602222 its reverse (22220661), we get a palindrome (38822883).

The spelling of 16602222 in words is "sixteen million, six hundred two thousand, two hundred twenty-two".