20160220 has 24 divisors (see below), whose sum is σ = 43797600. Its totient is φ = 7785792.

The previous prime is 20160187. The next prime is 20160251. The reversal of 20160220 is 2206102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20160220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16800 + ... + 17959.

It is an arithmetic number, because the mean of its divisors is an integer number (1824900).

Almost surely, 2^20160220 is an apocalyptic number.

20160220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20160220 is an abundant number, since it is smaller than the sum of its proper divisors (23637380).

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

20160220 is a wasteful number, since it uses less digits than its factorization.

20160220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34797 (or 34795 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20160220 is about 4490.0133630091. The cubic root of 20160220 is about 272.1646746479.

Adding to 20160220 its reverse (2206102), we get a palindrome (22366322).

The spelling of 20160220 in words is "twenty million, one hundred sixty thousand, two hundred twenty".