144220504 has 16 divisors (see below), whose sum is σ = 273837600. Its totient is φ = 71197152.

The previous prime is 144220501. The next prime is 144220519. The reversal of 144220504 is 405022441.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144220501) 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, 113467 + ... + 114730.

It is an arithmetic number, because the mean of its divisors is an integer number (17114850).

Almost surely, 2^144220504 is an apocalyptic number.

It is an amenable number.

144220504 is a deficient number, since it is larger than the sum of its proper divisors (129617096).

144220504 is a wasteful number, since it uses less digits than its factorization.

144220504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228282 (or 228278 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 144220504 is about 12009.1841521396. The cubic root of 144220504 is about 524.4156812696.

Adding to 144220504 its reverse (405022441), we get a palindrome (549242945).

The spelling of 144220504 in words is "one hundred forty-four million, two hundred twenty thousand, five hundred four".