16023220 has 48 divisors (see below), whose sum is σ = 35239680. Its totient is φ = 6113664.

The previous prime is 16023199. The next prime is 16023221. The reversal of 16023220 is 2232061.

It is a junction number, because it is equal to n+sod(n) for n = 16023194 and 16023203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16023221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43477 + ... + 43843.

It is an arithmetic number, because the mean of its divisors is an integer number (734160).

Almost surely, 2^16023220 is an apocalyptic number.

16023220 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 16023220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17619840).

16023220 is an abundant number, since it is smaller than the sum of its proper divisors (19216460).

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

16023220 is a wasteful number, since it uses less digits than its factorization.

16023220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472 (or 470 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 16023220 is about 4002.9014477002. The cubic root of 16023220 is about 252.1060484202.

Adding to 16023220 its reverse (2232061), we get a palindrome (18255281).

The spelling of 16023220 in words is "sixteen million, twenty-three thousand, two hundred twenty".