2820347 has 2 divisors, whose sum is σ = 2820348. Its totient is φ = 2820346.

The previous prime is 2820343. The next prime is 2820359. The reversal of 2820347 is 7430282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2820347 - 2² = 2820343 is a prime.

It is not a weakly prime, because it can be changed into another prime (2820343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1410173 + 1410174.

It is an arithmetic number, because the mean of its divisors is an integer number (1410174).

2^2820347 is an apocalyptic number.

2820347 is a deficient number, since it is larger than the sum of its proper divisors (1).

2820347 is an equidigital number, since it uses as much as digits as its factorization.

2820347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 2820347 is about 1679.3888769430. The cubic root of 2820347 is about 141.2865590491.

The spelling of 2820347 in words is "two million, eight hundred twenty thousand, three hundred forty-seven".