2820862 has 8 divisors (see below), whose sum is σ = 4615992. Its totient is φ = 1282200.

The previous prime is 2820833. The next prime is 2820863. The reversal of 2820862 is 2680282.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2820862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2820863) 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 in 3 ways as a sum of consecutive naturals, for example, 64089 + ... + 64132.

It is an arithmetic number, because the mean of its divisors is an integer number (576999).

2^2820862 is an apocalyptic number.

2820862 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2820862 is a deficient number, since it is larger than the sum of its proper divisors (1795130).

2820862 is a wasteful number, since it uses less digits than its factorization.

2820862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128234.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 2820862 is about 1679.5421995294. The cubic root of 2820862 is about 141.2951582450.

The spelling of 2820862 in words is "two million, eight hundred twenty thousand, eight hundred sixty-two".