2780973 has 40 divisors (see below), whose sum is σ = 4743200. Its totient is φ = 1609632.

The previous prime is 2780971. The next prime is 2780993. The reversal of 2780973 is 3790872.

It is not a de Polignac number, because 2780973 - 2¹ = 2780971 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2780971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 19938 + ... + 20076.

It is an arithmetic number, because the mean of its divisors is an integer number (118580).

2^2780973 is an apocalyptic number.

It is an amenable number.

2780973 is a deficient number, since it is larger than the sum of its proper divisors (1962227).

2780973 is a wasteful number, since it uses less digits than its factorization.

2780973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 2780973 is about 1667.6249578367. The cubic root of 2780973 is about 140.6259893264.

The spelling of 2780973 in words is "two million, seven hundred eighty thousand, nine hundred seventy-three".