1440304872 has 32 divisors (see below), whose sum is σ = 3812572800. Its totient is φ = 451860224.

The previous prime is 1440304871. The next prime is 1440304891. The reversal of 1440304872 is 2784030441.

It is not an unprimeable number, because it can be changed into a prime (1440304871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1764672 + ... + 1765487.

It is an arithmetic number, because the mean of its divisors is an integer number (119142900).

Almost surely, 2^1440304872 is an apocalyptic number.

1440304872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1440304872 is an abundant number, since it is smaller than the sum of its proper divisors (2372267928).

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

1440304872 is a wasteful number, since it uses less digits than its factorization.

1440304872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3530185 (or 3530181 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 1440304872 is about 37951.3487507361. The cubic root of 1440304872 is about 1129.3229222383.

The spelling of 1440304872 in words is "one billion, four hundred forty million, three hundred four thousand, eight hundred seventy-two".