2780876984 has 16 divisors (see below), whose sum is σ = 5221700520. Its totient is φ = 1388423520.

The previous prime is 2780876897. The next prime is 2780877007. The reversal of 2780876984 is 4896780872.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245999 + ... + 257054.

Almost surely, 2^2780876984 is an apocalyptic number.

It is an amenable number.

2780876984 is a deficient number, since it is larger than the sum of its proper divisors (2440823536).

2780876984 is a wasteful number, since it uses less digits than its factorization.

2780876984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503750 (or 503746 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 59.

The square root of 2780876984 is about 52734.0211248867. The cubic root of 2780876984 is about 1406.2437088798.

The spelling of 2780876984 in words is "two billion, seven hundred eighty million, eight hundred seventy-six thousand, nine hundred eighty-four".