2780028255 has 16 divisors (see below), whose sum is σ = 4449300480. Its totient is φ = 1482263328.

The previous prime is 2780028227. The next prime is 2780028269. The reversal of 2780028255 is 5528200872.

It is a happy number.

It is not a de Polignac number, because 2780028255 - 2¹⁶ = 2779962719 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33106 + ... + 81584.

It is an arithmetic number, because the mean of its divisors is an integer number (278081280).

Almost surely, 2^2780028255 is an apocalyptic number.

2780028255 is a deficient number, since it is larger than the sum of its proper divisors (1669272225).

2780028255 is a wasteful number, since it uses less digits than its factorization.

2780028255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52310.

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 2780028255 is about 52725.9732484854. The cubic root of 2780028255 is about 1406.1006315622.

The spelling of 2780028255 in words is "two billion, seven hundred eighty million, twenty-eight thousand, two hundred fifty-five".