2780677128 has 16 divisors (see below), whose sum is σ = 6951692880. Its totient is φ = 926892368.

The previous prime is 2780677127. The next prime is 2780677177. The reversal of 2780677128 is 8217760872.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2780677127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57930750 + ... + 57930797.

It is an arithmetic number, because the mean of its divisors is an integer number (434480805).

Almost surely, 2^2780677128 is an apocalyptic number.

It is an amenable number.

2780677128 is an abundant number, since it is smaller than the sum of its proper divisors (4171015752).

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

2780677128 is a wasteful number, since it uses less digits than its factorization.

2780677128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115861556 (or 115861552 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 48.

The square root of 2780677128 is about 52732.1261471600. The cubic root of 2780677128 is about 1406.2100201098.

The spelling of 2780677128 in words is "two billion, seven hundred eighty million, six hundred seventy-seven thousand, one hundred twenty-eight".