2784873 has 24 divisors (see below), whose sum is σ = 4615744. Its totient is φ = 1454400.

The previous prime is 2784871. The next prime is 2784883. The reversal of 2784873 is 3784872.

It is not a de Polignac number, because 2784873 - 2¹ = 2784871 is a prime.

It is a super-2 number, since 2×2784873² = 15511035252258, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

2784873 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2784871) 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 23 ways as a sum of consecutive naturals, for example, 27523 + ... + 27623.

2^2784873 is an apocalyptic number.

It is an amenable number.

2784873 is a deficient number, since it is larger than the sum of its proper divisors (1830871).

2784873 is a wasteful number, since it uses less digits than its factorization.

2784873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 124 counting only the distinct ones).

The product of its digits is 75264, while the sum is 39.

The square root of 2784873 is about 1668.7938758277. The cubic root of 2784873 is about 140.6916959672.

Subtracting 2784873 from its reverse (3784872), we obtain a palindrome (999999).

It can be divided in two parts, 278 and 4873, that added together give a triangular number (5151 = T₁₀₁).

The spelling of 2784873 in words is "two million, seven hundred eighty-four thousand, eight hundred seventy-three".