2840307 has 4 divisors (see below), whose sum is σ = 3787080. Its totient is φ = 1893536.

The previous prime is 2840303. The next prime is 2840353. The reversal of 2840307 is 7030482.

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

It is a cyclic number.

It is not a de Polignac number, because 2840307 - 2² = 2840303 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2840303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473382 + ... + 473387.

It is an arithmetic number, because the mean of its divisors is an integer number (946770).

2^2840307 is an apocalyptic number.

2840307 is a deficient number, since it is larger than the sum of its proper divisors (946773).

2840307 is an equidigital number, since it uses as much as digits as its factorization.

2840307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946772.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 2840307 is about 1685.3210376661. The cubic root of 2840307 is about 141.6190775949.

Adding to 2840307 its reverse (7030482), we get a palindrome (9870789).

The spelling of 2840307 in words is "two million, eight hundred forty thousand, three hundred seven".