1440001224 has 48 divisors (see below), whose sum is σ = 4005416220. Its totient is φ = 467026560.

The previous prime is 1440001207. The next prime is 1440001249. The reversal of 1440001224 is 4221000441.

1440001224 is a `hidden beast` number, since 1 + 440 + 0 + 0 + 1 + 224 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1431108900 + 8892324 = 37830^2 + 2982^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1440001197 and 1440001206.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 267607 + ... + 272934.

Almost surely, 2^1440001224 is an apocalyptic number.

It is an amenable number.

1440001224 is an abundant number, since it is smaller than the sum of its proper divisors (2565414996).

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

1440001224 is a wasteful number, since it uses less digits than its factorization.

1440001224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540590 (or 540583 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1440001224 is about 37947.3480496332. The cubic root of 1440001224 is about 1129.2435546094.

Adding to 1440001224 its reverse (4221000441), we get a palindrome (5661001665).

The spelling of 1440001224 in words is "one billion, four hundred forty million, one thousand, two hundred twenty-four".