16052220 has 72 divisors (see below), whose sum is σ = 49022064. Its totient is φ = 4251648.

The previous prime is 16052219. The next prime is 16052227. The reversal of 16052220 is 2225061.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 16052193 and 16052202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16052227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46087 + ... + 46433.

It is an arithmetic number, because the mean of its divisors is an integer number (680862).

Almost surely, 2^16052220 is an apocalyptic number.

16052220 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 16052220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24511032).

16052220 is an abundant number, since it is smaller than the sum of its proper divisors (32969844).

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

16052220 is a wasteful number, since it uses less digits than its factorization.

16052220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619 (or 614 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 16052220 is about 4006.5221826417. The cubic root of 16052220 is about 252.2580501012.

Adding to 16052220 its reverse (2225061), we get a palindrome (18277281).

The spelling of 16052220 in words is "sixteen million, fifty-two thousand, two hundred twenty".