2798556 has 24 divisors (see below), whose sum is σ = 6741504. Its totient is φ = 902640.

The previous prime is 2798539. The next prime is 2798597. The reversal of 2798556 is 6558972.

It is a d-powerful number, because it can be written as 2¹⁹ + 7⁶ + 9⁴ + 8⁷ + 5⁵ + 5⁵ + 6⁶ .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3390 + ... + 4133.

It is an arithmetic number, because the mean of its divisors is an integer number (280896).

2^2798556 is an apocalyptic number.

It is an amenable number.

2798556 is an abundant number, since it is smaller than the sum of its proper divisors (3942948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2798556 is a wasteful number, since it uses less digits than its factorization.

2798556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7561 (or 7559 counting only the distinct ones).

The product of its digits is 151200, while the sum is 42.

The square root of 2798556 is about 1672.8885198961. Note that the first 3 decimals coincide. The cubic root of 2798556 is about 140.9217411908.

The spelling of 2798556 in words is "two million, seven hundred ninety-eight thousand, five hundred fifty-six".