2780323 has 8 divisors (see below), whose sum is σ = 3422048. Its totient is φ = 2199744.

The previous prime is 2780303. The next prime is 2780329. The reversal of 2780323 is 3230872.

It is a happy number.

2780323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2780323 - 2⁹ = 2779811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2780329) 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 7 ways as a sum of consecutive naturals, for example, 15186 + ... + 15367.

It is an arithmetic number, because the mean of its divisors is an integer number (427756).

2^2780323 is an apocalyptic number.

2780323 is a deficient number, since it is larger than the sum of its proper divisors (641725).

2780323 is a wasteful number, since it uses less digits than its factorization.

2780323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30573.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 2780323 is about 1667.4300585032. The cubic root of 2780323 is about 140.6150322482.

The spelling of 2780323 in words is "two million, seven hundred eighty thousand, three hundred twenty-three".