2780749896 has 32 divisors (see below), whose sum is σ = 6963179040. Its totient is φ = 925409408.

The previous prime is 2780749889. The next prime is 2780749897. The reversal of 2780749896 is 6989470872.

It is not an unprimeable number, because it can be changed into a prime (2780749897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79086 + ... + 108701.

It is an arithmetic number, because the mean of its divisors is an integer number (217599345).

Almost surely, 2^2780749896 is an apocalyptic number.

It is an amenable number.

2780749896 is an abundant number, since it is smaller than the sum of its proper divisors (4182429144).

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

2780749896 is a wasteful number, since it uses less digits than its factorization.

2780749896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188413 (or 188409 counting only the distinct ones).

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

The square root of 2780749896 is about 52732.8161205146. The cubic root of 2780749896 is about 1406.2222864504. Note that the first 4 decimals are identical.

The spelling of 2780749896 in words is "two billion, seven hundred eighty million, seven hundred forty-nine thousand, eight hundred ninety-six".