16285220 has 48 divisors (see below), whose sum is σ = 39553920. Its totient is φ = 5516544.

The previous prime is 16285189. The next prime is 16285229. The reversal of 16285220 is 2258261.

It is a self number, because there is not a number n which added to its sum of digits gives 16285220.

It is not an unprimeable number, because it can be changed into a prime (16285229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11807 + ... + 13113.

It is an arithmetic number, because the mean of its divisors is an integer number (824040).

Almost surely, 2^16285220 is an apocalyptic number.

16285220 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 16285220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19776960).

16285220 is an abundant number, since it is smaller than the sum of its proper divisors (23268700).

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

16285220 is a wasteful number, since it uses less digits than its factorization.

16285220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412 (or 1410 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 16285220 is about 4035.4950130065. The cubic root of 16285220 is about 253.4727110846.

The spelling of 16285220 in words is "sixteen million, two hundred eighty-five thousand, two hundred twenty".