2784223 has 8 divisors (see below), whose sum is σ = 3048416. Its totient is φ = 2527200.

The previous prime is 2784217. The next prime is 2784227. The reversal of 2784223 is 3224872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2784223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2784191 and 2784200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2784227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 963 + ... + 2548.

It is an arithmetic number, because the mean of its divisors is an integer number (381052).

2^2784223 is an apocalyptic number.

2784223 is a deficient number, since it is larger than the sum of its proper divisors (264193).

2784223 is a wasteful number, since it uses less digits than its factorization.

2784223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3585.

The product of its digits is 5376, while the sum is 28.

The square root of 2784223 is about 1668.5991130287. The cubic root of 2784223 is about 140.6807491223.

The spelling of 2784223 in words is "two million, seven hundred eighty-four thousand, two hundred twenty-three".