16873220 has 96 divisors (see below), whose sum is σ = 44556288. Its totient is φ = 5225472.

The previous prime is 16873217. The next prime is 16873229. The reversal of 16873220 is 2237861.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (16873229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132797 + ... + 132923.

It is an arithmetic number, because the mean of its divisors is an integer number (464128).

Almost surely, 2^16873220 is an apocalyptic number.

16873220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16873220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22278144).

16873220 is an abundant number, since it is smaller than the sum of its proper divisors (27683068).

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

16873220 is a wasteful number, since it uses less digits than its factorization.

16873220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 16873220 is about 4107.7025208747. The cubic root of 16873220 is about 256.4873731446.

The spelling of 16873220 in words is "sixteen million, eight hundred seventy-three thousand, two hundred twenty".