2780749968 has 40 divisors (see below), whose sum is σ = 7187138208. Its totient is φ = 926460672.

The previous prime is 2780749897. The next prime is 2780749973. The reversal of 2780749968 is 8699470872.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92596 + ... + 118892.

Almost surely, 2^2780749968 is an apocalyptic number.

It is an amenable number.

2780749968 is an abundant number, since it is smaller than the sum of its proper divisors (4406388240).

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

2780749968 is a wasteful number, since it uses less digits than its factorization.

2780749968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28511 (or 28505 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 60.

The square root of 2780749968 is about 52732.8168032014. The cubic root of 2780749968 is about 1406.2222985872. Note that the first 4 decimals are identical.

The spelling of 2780749968 in words is "two billion, seven hundred eighty million, seven hundred forty-nine thousand, nine hundred sixty-eight".