2820802 has 4 divisors (see below), whose sum is σ = 4231206. Its totient is φ = 1410400.

The previous prime is 2820791. The next prime is 2820803. The reversal of 2820802 is 2080282.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2080282 = 2 ⋅1040141.

It can be written as a sum of positive squares in only one way, i.e., 2792241 + 28561 = 1671^2 + 169^2 .

It is not an unprimeable number, because it can be changed into a prime (2820803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 705199 + ... + 705202.

2^2820802 is an apocalyptic number.

2820802 is a deficient number, since it is larger than the sum of its proper divisors (1410404).

2820802 is a wasteful number, since it uses less digits than its factorization.

2820802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410403.

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

The square root of 2820802 is about 1679.5243374241. The cubic root of 2820802 is about 141.2941564508.

The spelling of 2820802 in words is "two million, eight hundred twenty thousand, eight hundred two".