2784393 has 18 divisors (see below), whose sum is σ = 4249674. Its totient is φ = 1756512.

The previous prime is 2784373. The next prime is 2784473. The reversal of 2784393 is 3934872.

2784393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2732409 + 51984 = 1653^2 + 228^2 .

It is not a de Polignac number, because 2784393 - 2⁶ = 2784329 is a prime.

2784393 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2784373) 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 17 ways as a sum of consecutive naturals, for example, 2821 + ... + 3677.

It is an arithmetic number, because the mean of its divisors is an integer number (236093).

2^2784393 is an apocalyptic number.

It is an amenable number.

2784393 is a deficient number, since it is larger than the sum of its proper divisors (1465281).

2784393 is a wasteful number, since it uses less digits than its factorization.

2784393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901 (or 879 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 2784393 is about 1668.6500531867. The cubic root of 2784393 is about 140.6836123078.

The spelling of 2784393 in words is "two million, seven hundred eighty-four thousand, three hundred ninety-three".