2782226 has 4 divisors (see below), whose sum is σ = 4173342. Its totient is φ = 1391112.

The previous prime is 2782217. The next prime is 2782279. The reversal of 2782226 is 6222872.

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

It can be written as a sum of positive squares in only one way, i.e., 1974025 + 808201 = 1405^2 + 899^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695555 + ... + 695558.

2^2782226 is an apocalyptic number.

2782226 is a deficient number, since it is larger than the sum of its proper divisors (1391116).

2782226 is a wasteful number, since it uses less digits than its factorization.

2782226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391115.

The product of its digits is 5376, while the sum is 29.

The square root of 2782226 is about 1668.0005995203. Note that the first 3 decimals coincide. The cubic root of 2782226 is about 140.6471063848.

It can be divided in two parts, 278 and 2226, that multiplied together give a triangular number (618828 = T₁₁₁₂).

The spelling of 2782226 in words is "two million, seven hundred eighty-two thousand, two hundred twenty-six".