2798266 has 4 divisors (see below), whose sum is σ = 4197402. Its totient is φ = 1399132.

The previous prime is 2798261. The next prime is 2798269. The reversal of 2798266 is 6628972.

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., 1651225 + 1147041 = 1285^2 + 1071^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2798261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699565 + ... + 699568.

2^2798266 is an apocalyptic number.

2798266 is a deficient number, since it is larger than the sum of its proper divisors (1399136).

2798266 is a wasteful number, since it uses less digits than its factorization.

2798266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399135.

The product of its digits is 72576, while the sum is 40.

The square root of 2798266 is about 1672.8018412233. The cubic root of 2798266 is about 140.9168733569.

The spelling of 2798266 in words is "two million, seven hundred ninety-eight thousand, two hundred sixty-six".