2784945 has 16 divisors (see below), whose sum is σ = 4476672. Its totient is φ = 1478400.

The previous prime is 2784941. The next prime is 2784949. The reversal of 2784945 is 5494872.

It is an interprime number because it is at equal distance from previous prime (2784941) and next prime (2784949).

It is not a de Polignac number, because 2784945 - 2² = 2784941 is a prime.

It is a d-powerful number, because it can be written as 2¹³ + 7⁷ + 8 + 4 + 9 + 4³ + 5⁹ .

It is not an unprimeable number, because it can be changed into a prime (2784941) 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 15 ways as a sum of consecutive naturals, for example, 5784 + ... + 6246.

It is an arithmetic number, because the mean of its divisors is an integer number (279792).

2^2784945 is an apocalyptic number.

It is an amenable number.

2784945 is a deficient number, since it is larger than the sum of its proper divisors (1691727).

2784945 is a wasteful number, since it uses less digits than its factorization.

2784945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872.

The product of its digits is 80640, while the sum is 39.

The square root of 2784945 is about 1668.8154481548. The cubic root of 2784945 is about 140.6929084360.

The spelling of 2784945 in words is "two million, seven hundred eighty-four thousand, nine hundred forty-five".