2780874 has 12 divisors (see below), whose sum is σ = 6025266. Its totient is φ = 926952.

The previous prime is 2780873. The next prime is 2780887. The reversal of 2780874 is 4780872.

It can be written as a sum of positive squares in only one way, i.e., 2772225 + 8649 = 1665^2 + 93^2 .

It is not an unprimeable number, because it can be changed into a prime (2780873) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77229 + ... + 77264.

2^2780874 is an apocalyptic number.

2780874 is an abundant number, since it is smaller than the sum of its proper divisors (3244392).

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

2780874 is a wasteful number, since it uses less digits than its factorization.

2780874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154501 (or 154498 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 2780874 is about 1667.5952746395. The cubic root of 2780874 is about 140.6243205893.

The spelling of 2780874 in words is "two million, seven hundred eighty thousand, eight hundred seventy-four".