16642226 has 16 divisors (see below), whose sum is σ = 25928448. Its totient is φ = 8002800.

The previous prime is 16642217. The next prime is 16642231. The reversal of 16642226 is 62224661.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10481 + ... + 11963.

It is an arithmetic number, because the mean of its divisors is an integer number (1620528).

Almost surely, 2^16642226 is an apocalyptic number.

16642226 is a deficient number, since it is larger than the sum of its proper divisors (9286222).

16642226 is a wasteful number, since it uses less digits than its factorization.

16642226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697.

The product of its digits is 6912, while the sum is 29.

The square root of 16642226 is about 4079.4884483229. The cubic root of 16642226 is about 255.3115556251.

Adding to 16642226 its reverse (62224661), we get a palindrome (78866887).

The spelling of 16642226 in words is "sixteen million, six hundred forty-two thousand, two hundred twenty-six".