2820947 has 2 divisors, whose sum is σ = 2820948. Its totient is φ = 2820946.

The previous prime is 2820943. The next prime is 2820971. The reversal of 2820947 is 7490282.

2820947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2820947 - 2² = 2820943 is a prime.

It is a Chen prime.

It is a plaindrome in base 13.

It is not a weakly prime, because it can be changed into another prime (2820941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1410473 + 1410474.

It is an arithmetic number, because the mean of its divisors is an integer number (1410474).

2^2820947 is an apocalyptic number.

2820947 is a deficient number, since it is larger than the sum of its proper divisors (1).

2820947 is an equidigital number, since it uses as much as digits as its factorization.

2820947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 2820947 is about 1679.5675038533. The cubic root of 2820947 is about 141.2965774292.

The spelling of 2820947 in words is "two million, eight hundred twenty thousand, nine hundred forty-seven".