144220276 has 6 divisors (see below), whose sum is σ = 252385490. Its totient is φ = 72110136.

The previous prime is 144220273. The next prime is 144220303. The reversal of 144220276 is 672022441.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 128822500 + 15397776 = 11350^2 + 3924^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144220273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18027531 + ... + 18027538.

Almost surely, 2^144220276 is an apocalyptic number.

It is an amenable number.

144220276 is a deficient number, since it is larger than the sum of its proper divisors (108165214).

144220276 is a wasteful number, since it uses less digits than its factorization.

144220276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36055073 (or 36055071 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 144220276 is about 12009.1746594010. The cubic root of 144220276 is about 524.4154049177.

The spelling of 144220276 in words is "one hundred forty-four million, two hundred twenty thousand, two hundred seventy-six".