2798506 has 16 divisors (see below), whose sum is σ = 4531464. Its totient is φ = 1291264.

The previous prime is 2798503. The next prime is 2798513. The reversal of 2798506 is 6058972.

2798506 is nontrivially palindromic in base 4.

It can be written as a sum of positive squares in 4 ways, for example, as 2449225 + 349281 = 1565^2 + 591^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2798503) 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, 1026 + ... + 2578.

2^2798506 is an apocalyptic number.

2798506 is a deficient number, since it is larger than the sum of its proper divisors (1732958).

2798506 is a wasteful number, since it uses less digits than its factorization.

2798506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 2798506 is about 1672.8735756177. The cubic root of 2798506 is about 140.9209019331.

The spelling of 2798506 in words is "two million, seven hundred ninety-eight thousand, five hundred six".