16822220 has 24 divisors (see below), whose sum is σ = 37186800. Its totient is φ = 6374592.

The previous prime is 16822217. The next prime is 16822229. The reversal of 16822220 is 2222861.

It is not an unprimeable number, because it can be changed into a prime (16822229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21755 + ... + 22514.

It is an arithmetic number, because the mean of its divisors is an integer number (1549450).

Almost surely, 2^16822220 is an apocalyptic number.

16822220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16822220 is an abundant number, since it is smaller than the sum of its proper divisors (20364580).

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

16822220 is a wasteful number, since it uses less digits than its factorization.

16822220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44297 (or 44295 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 16822220 is about 4101.4899731683. The cubic root of 16822220 is about 256.2286978128.

The spelling of 16822220 in words is "sixteen million, eight hundred twenty-two thousand, two hundred twenty".