2780075328 has 56 divisors (see below), whose sum is σ = 7362017280. Its totient is φ = 925885440.

The previous prime is 2780075317. The next prime is 2780075341. The reversal of 2780075328 is 8235700872.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2780075328.

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 7 ways as a sum of consecutive naturals, for example, 239908 + ... + 251228.

Almost surely, 2^2780075328 is an apocalyptic number.

It is an amenable number.

2780075328 is an abundant number, since it is smaller than the sum of its proper divisors (4581941952).

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

2780075328 is a wasteful number, since it uses less digits than its factorization.

2780075328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12615 (or 12605 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 42.

The square root of 2780075328 is about 52726.4196394938. The cubic root of 2780075328 is about 1406.1085678126.

The spelling of 2780075328 in words is "two billion, seven hundred eighty million, seventy-five thousand, three hundred twenty-eight".