2857838 has 8 divisors (see below), whose sum is σ = 4328688. Its totient is φ = 1414944.

The previous prime is 2857831. The next prime is 2857849. The reversal of 2857838 is 8387582.

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

It is a junction number, because it is equal to n+sod(n) for n = 2857795 and 2857804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2857831) 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, 6731 + ... + 7142.

It is an arithmetic number, because the mean of its divisors is an integer number (541086).

2^2857838 is an apocalyptic number.

2857838 is a deficient number, since it is larger than the sum of its proper divisors (1470850).

2857838 is a wasteful number, since it uses less digits than its factorization.

2857838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13978.

The product of its digits is 107520, while the sum is 41.

The square root of 2857838 is about 1690.5141229815. The cubic root of 2857838 is about 141.9098482193.

The spelling of 2857838 in words is "two million, eight hundred fifty-seven thousand, eight hundred thirty-eight".