2780235 has 24 divisors (see below), whose sum is σ = 4977024. Its totient is φ = 1434240.

The previous prime is 2780233. The next prime is 2780243. The reversal of 2780235 is 5320872.

2780235 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2780235 - 2¹ = 2780233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2780199 and 2780208.

It is not an unprimeable number, because it can be changed into a prime (2780233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 399 + ... + 2391.

It is an arithmetic number, because the mean of its divisors is an integer number (207376).

2^2780235 is an apocalyptic number.

2780235 is a deficient number, since it is larger than the sum of its proper divisors (2196789).

2780235 is a wasteful number, since it uses less digits than its factorization.

2780235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2035 (or 2032 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 2780235 is about 1667.4036703810. The cubic root of 2780235 is about 140.6135486972.

The spelling of 2780235 in words is "two million, seven hundred eighty thousand, two hundred thirty-five".