2051344040 has 32 divisors (see below), whose sum is σ = 4642219080. Its totient is φ = 815791872.

The previous prime is 2051344027. The next prime is 2051344073. The reversal of 2051344040 is 404431502.

It can be written as a sum of positive squares in 4 ways, for example, as 1963021636 + 88322404 = 44306^2 + 9398^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2051343997 and 2051344015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141299 + ... + 155138.

Almost surely, 2^2051344040 is an apocalyptic number.

2051344040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2051344040 is an abundant number, since it is smaller than the sum of its proper divisors (2590875040).

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

2051344040 is a wasteful number, since it uses less digits than its factorization.

2051344040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296621 (or 296617 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 2051344040 is about 45291.7656975305. The cubic root of 2051344040 is about 1270.6116548593.

Adding to 2051344040 its reverse (404431502), we get a palindrome (2455775542).

The spelling of 2051344040 in words is "two billion, fifty-one million, three hundred forty-four thousand, forty".