2140731440 has 40 divisors (see below), whose sum is σ = 5193605088. Its totient is φ = 819061760.

The previous prime is 2140731433. The next prime is 2140731451. The reversal of 2140731440 is 441370412.

It is a tau number, because it is divible by the number of its divisors (40).

It is a zygodrome in base 2.

It is an unprimeable number.

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, 579881 + ... + 583560.

Almost surely, 2^2140731440 is an apocalyptic number.

2140731440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2140731440 is an abundant number, since it is smaller than the sum of its proper divisors (3052873648).

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

2140731440 is a wasteful number, since it uses less digits than its factorization.

2140731440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163477 (or 1163471 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 2140731440 is about 46268.0390766672. The cubic root of 2140731440 is about 1288.8055445954.

The spelling of 2140731440 in words is "two billion, one hundred forty million, seven hundred thirty-one thousand, four hundred forty".