16053220 has 12 divisors (see below), whose sum is σ = 33711804. Its totient is φ = 6421280.

The previous prime is 16053217. The next prime is 16053221. The reversal of 16053220 is 2235061.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5503716 + 10549504 = 2346^2 + 3248^2 .

It is not an unprimeable number, because it can be changed into a prime (16053221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401311 + ... + 401350.

It is an arithmetic number, because the mean of its divisors is an integer number (2809317).

Almost surely, 2^16053220 is an apocalyptic number.

16053220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16053220 is an abundant number, since it is smaller than the sum of its proper divisors (17658584).

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

16053220 is a wasteful number, since it uses less digits than its factorization.

16053220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802670 (or 802668 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 16053220 is about 4006.6469772117. The cubic root of 16053220 is about 252.2632882721.

Adding to 16053220 its reverse (2235061), we get a palindrome (18288281).

The spelling of 16053220 in words is "sixteen million, fifty-three thousand, two hundred twenty".