2642320256 has 16 divisors (see below), whose sum is σ = 5263997640. Its totient is φ = 1321160064.

The previous prime is 2642320237. The next prime is 2642320267. The reversal of 2642320256 is 6520232462.

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

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 as a sum of consecutive naturals, namely, 10321436 + ... + 10321691.

Almost surely, 2^2642320256 is an apocalyptic number.

It is an amenable number.

2642320256 is a deficient number, since it is larger than the sum of its proper divisors (2621677384).

2642320256 is an equidigital number, since it uses as much as digits as its factorization.

2642320256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20643141 (or 20643129 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 2642320256 is about 51403.5043163401. The cubic root of 2642320256 is about 1382.4894251922.

The spelling of 2642320256 in words is "two billion, six hundred forty-two million, three hundred twenty thousand, two hundred fifty-six".