20140220 has 24 divisors (see below), whose sum is σ = 42387408. Its totient is φ = 8038400.

The previous prime is 20140213. The next prime is 20140243. The reversal of 20140220 is 2204102.

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, 12035 + ... + 13605.

It is an arithmetic number, because the mean of its divisors is an integer number (1766142).

Almost surely, 2^20140220 is an apocalyptic number.

20140220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20140220 is an abundant number, since it is smaller than the sum of its proper divisors (22247188).

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

20140220 is a wasteful number, since it uses less digits than its factorization.

20140220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221 (or 2219 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 20140220 is about 4487.7856455049. The cubic root of 20140220 is about 272.0746443061.

Adding to 20140220 its reverse (2204102), we get a palindrome (22344322).

The spelling of 20140220 in words is "twenty million, one hundred forty thousand, two hundred twenty".