144621224 has 16 divisors (see below), whose sum is σ = 295816320. Its totient is φ = 65736880.

The previous prime is 144621223. The next prime is 144621233. The reversal of 144621224 is 422126441.

It is a junction number, because it is equal to n+sod(n) for n = 144621193 and 144621202.

It is not an unprimeable number, because it can be changed into a prime (144621223) 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, 821624 + ... + 821799.

It is an arithmetic number, because the mean of its divisors is an integer number (18488520).

Almost surely, 2^144621224 is an apocalyptic number.

It is an amenable number.

144621224 is an abundant number, since it is smaller than the sum of its proper divisors (151195096).

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

144621224 is a wasteful number, since it uses less digits than its factorization.

144621224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643440 (or 1643436 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

The square root of 144621224 is about 12025.8564767754. The cubic root of 144621224 is about 524.9009324787.

Adding to 144621224 its reverse (422126441), we get a palindrome (566747665).

The spelling of 144621224 in words is "one hundred forty-four million, six hundred twenty-one thousand, two hundred twenty-four".