144220216 has 16 divisors (see below), whose sum is σ = 309043440. Its totient is φ = 61808640.

The previous prime is 144220207. The next prime is 144220273. The reversal of 144220216 is 612022441.

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, 1287625 + ... + 1287736.

It is an arithmetic number, because the mean of its divisors is an integer number (19315215).

Almost surely, 2^144220216 is an apocalyptic number.

It is an amenable number.

144220216 is an abundant number, since it is smaller than the sum of its proper divisors (164823224).

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

144220216 is a wasteful number, since it uses less digits than its factorization.

144220216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2575374 (or 2575370 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 144220216 is about 12009.1721613107. The cubic root of 144220216 is about 524.4153321935.

Adding to 144220216 its reverse (612022441), we get a palindrome (756242657).

The spelling of 144220216 in words is "one hundred forty-four million, two hundred twenty thousand, two hundred sixteen".