2782238 has 4 divisors (see below), whose sum is σ = 4173360. Its totient is φ = 1391118.

The previous prime is 2782217. The next prime is 2782279. The reversal of 2782238 is 8322872.

2782238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a d-powerful number, because it can be written as 2 + 7⁶ + 8⁵ + 2¹³ + 2¹⁹ + 3⁷ + 8⁷ .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 695558 + ... + 695561.

It is an arithmetic number, because the mean of its divisors is an integer number (1043340).

2^2782238 is an apocalyptic number.

2782238 is a deficient number, since it is larger than the sum of its proper divisors (1391122).

2782238 is a wasteful number, since it uses less digits than its factorization.

2782238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391121.

The product of its digits is 10752, while the sum is 32.

The square root of 2782238 is about 1668.0041966374. The cubic root of 2782238 is about 140.6473085925.

The spelling of 2782238 in words is "two million, seven hundred eighty-two thousand, two hundred thirty-eight".