2056747640 has 16 divisors (see below), whose sum is σ = 4627682280. Its totient is φ = 822699040.

The previous prime is 2056747621. The next prime is 2056747643. The reversal of 2056747640 is 467476502.

2056747640 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056747643) by changing a digit.

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, 25709306 + ... + 25709385.

Almost surely, 2^2056747640 is an apocalyptic number.

2056747640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2056747640 is an abundant number, since it is smaller than the sum of its proper divisors (2570934640).

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

2056747640 is a wasteful number, since it uses less digits than its factorization.

2056747640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51418702 (or 51418698 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 41.

The square root of 2056747640 is about 45351.3796923534. The cubic root of 2056747640 is about 1271.7263479857.

The spelling of 2056747640 in words is "two billion, fifty-six million, seven hundred forty-seven thousand, six hundred forty".