2780005275 has 18 divisors (see below), whose sum is σ = 4979298740. Its totient is φ = 1482669360.

The previous prime is 2780005271. The next prime is 2780005289. The reversal of 2780005275 is 5725000872.

It is not a de Polignac number, because 2780005275 - 2² = 2780005271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2780005271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6177565 + ... + 6178014.

Almost surely, 2^2780005275 is an apocalyptic number.

2780005275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2780005275 is a deficient number, since it is larger than the sum of its proper divisors (2199293465).

2780005275 is a wasteful number, since it uses less digits than its factorization.

2780005275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12355595 (or 12355587 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 2780005275 is about 52725.7553288713. The cubic root of 2780005275 is about 1406.0967572273.

The spelling of 2780005275 in words is "two billion, seven hundred eighty million, five thousand, two hundred seventy-five".