2800822 has 4 divisors (see below), whose sum is σ = 4201236. Its totient is φ = 1400410.

The previous prime is 2800799. The next prime is 2800823. The reversal of 2800822 is 2280082.

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

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2800793 and 2800802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2800823) by changing a digit.

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 as a sum of consecutive naturals, namely, 700204 + ... + 700207.

It is an arithmetic number, because the mean of its divisors is an integer number (1050309).

2^2800822 is an apocalyptic number.

2800822 is a deficient number, since it is larger than the sum of its proper divisors (1400414).

2800822 is a wasteful number, since it uses less digits than its factorization.

2800822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400413.

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 2800822 is about 1673.5656545233. The cubic root of 2800822 is about 140.9597658622.

The spelling of 2800822 in words is "two million, eight hundred thousand, eight hundred twenty-two".