2857340 has 12 divisors (see below), whose sum is σ = 6000456. Its totient is φ = 1142928.

The previous prime is 2857339. The next prime is 2857357. The reversal of 2857340 is 437582.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 71414 + ... + 71453.

It is an arithmetic number, because the mean of its divisors is an integer number (500038).

2^2857340 is an apocalyptic number.

2857340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2857340 is an abundant number, since it is smaller than the sum of its proper divisors (3143116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2857340 is a wasteful number, since it uses less digits than its factorization.

2857340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142876 (or 142874 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 2857340 is about 1690.3668240947. The cubic root of 2857340 is about 141.9016047838.

The spelling of 2857340 in words is "two million, eight hundred fifty-seven thousand, three hundred forty".