144209228 has 24 divisors (see below), whose sum is σ = 262829280. Its totient is φ = 69148800.

The previous prime is 144209227. The next prime is 144209231. The reversal of 144209228 is 822902441.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 144209194 and 144209203.

It is not an unprimeable number, because it can be changed into a prime (144209227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13400 + ... + 21632.

It is an arithmetic number, because the mean of its divisors is an integer number (10951220).

Almost surely, 2^144209228 is an apocalyptic number.

It is an amenable number.

144209228 is a deficient number, since it is larger than the sum of its proper divisors (118620052).

144209228 is a wasteful number, since it uses less digits than its factorization.

144209228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8417 (or 8415 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 144209228 is about 12008.7146689394. The cubic root of 144209228 is about 524.4020136214.

The spelling of 144209228 in words is "one hundred forty-four million, two hundred nine thousand, two hundred twenty-eight".