1440233740 has 48 divisors (see below), whose sum is σ = 3332163744. Its totient is φ = 518528000.

The previous prime is 1440233723. The next prime is 1440233759. The reversal of 1440233740 is 473320441.

It is a junction number, because it is equal to n+sod(n) for n = 1440233699 and 1440233708.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10189 + ... + 54628.

It is an arithmetic number, because the mean of its divisors is an integer number (69420078).

Almost surely, 2^1440233740 is an apocalyptic number.

1440233740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1440233740 is an abundant number, since it is smaller than the sum of its proper divisors (1891930004).

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

1440233740 is a wasteful number, since it uses less digits than its factorization.

1440233740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64938 (or 64936 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 1440233740 is about 37950.4115919709. The cubic root of 1440233740 is about 1129.3043307298.

The spelling of 1440233740 in words is "one billion, four hundred forty million, two hundred thirty-three thousand, seven hundred forty".