144220220 has 12 divisors (see below), whose sum is σ = 302862504. Its totient is φ = 57688080.

The previous prime is 144220207. The next prime is 144220273. The reversal of 144220220 is 22022441.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3605486 + ... + 3605525.

It is an arithmetic number, because the mean of its divisors is an integer number (25238542).

Almost surely, 2^144220220 is an apocalyptic number.

144220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144220220 is an abundant number, since it is smaller than the sum of its proper divisors (158642284).

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

144220220 is a wasteful number, since it uses less digits than its factorization.

144220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7211020 (or 7211018 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 144220220 is about 12009.1723278501. The cubic root of 144220220 is about 524.4153370417.

Adding to 144220220 its reverse (22022441), we get a palindrome (166242661).

The spelling of 144220220 in words is "one hundred forty-four million, two hundred twenty thousand, two hundred twenty".