2981696256 has 378 divisors, whose sum is σ = 10941579012. Its totient is φ = 774466560.

The previous prime is 2981696227. The next prime is 2981696257. The reversal of 2981696256 is 6526961892.

It is a happy number.

2981696256 is a `hidden beast` number, since 2 + 9 + 8 + 1 + 6 + 9 + 625 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (2981696257) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 271063291 + ... + 271063301.

Almost surely, 2^2981696256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2981696256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5470789506).

2981696256 is an abundant number, since it is smaller than the sum of its proper divisors (7959882756).

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

2981696256 is an frugal number, since it uses more digits than its factorization.

2981696256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 23 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 2981696256 is about 54604.9105484113. The cubic root of 2981696256 is about 1439.3104105618.

The spelling of 2981696256 in words is "two billion, nine hundred eighty-one million, six hundred ninety-six thousand, two hundred fifty-six".