2780274 has 32 divisors (see below), whose sum is σ = 6480000. Its totient is φ = 778752.

The previous prime is 2780273. The next prime is 2780303. The reversal of 2780274 is 4720872.

2780274 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2780273) 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 15 ways as a sum of consecutive naturals, for example, 1602 + ... + 2850.

It is an arithmetic number, because the mean of its divisors is an integer number (202500).

2^2780274 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2780274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3240000).

2780274 is an abundant number, since it is smaller than the sum of its proper divisors (3699726).

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

2780274 is a wasteful number, since it uses less digits than its factorization.

2780274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314.

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 2780274 is about 1667.4153651685. The cubic root of 2780274 is about 140.6142061839.

The spelling of 2780274 in words is "two million, seven hundred eighty thousand, two hundred seventy-four".