1440856028 has 12 divisors (see below), whose sum is σ = 2521842120. Its totient is φ = 720329712.

The previous prime is 1440856007. The next prime is 1440856073. The reversal of 1440856028 is 8206580441.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1440855982 and 1440856000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15758 + ... + 55946.

It is an arithmetic number, because the mean of its divisors is an integer number (210153510).

Almost surely, 2^1440856028 is an apocalyptic number.

It is an amenable number.

1440856028 is a deficient number, since it is larger than the sum of its proper divisors (1080986092).

1440856028 is a wasteful number, since it uses less digits than its factorization.

1440856028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49156 (or 49154 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 1440856028 is about 37958.6094055090. The cubic root of 1440856028 is about 1129.4669551068.

The spelling of 1440856028 in words is "one billion, four hundred forty million, eight hundred fifty-six thousand, twenty-eight".