2857723 has 8 divisors (see below), whose sum is σ = 3133440. Its totient is φ = 2584680.

The previous prime is 2857721. The next prime is 2857753. The reversal of 2857723 is 3277582.

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

It is a cyclic number.

It is not a de Polignac number, because 2857723 - 2¹ = 2857721 is a prime.

It is a Duffinian number.

2857723 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2857721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2086 + ... + 3172.

It is an arithmetic number, because the mean of its divisors is an integer number (391680).

2^2857723 is an apocalyptic number.

2857723 is a deficient number, since it is larger than the sum of its proper divisors (275717).

2857723 is a wasteful number, since it uses less digits than its factorization.

2857723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337.

The product of its digits is 23520, while the sum is 34.

The square root of 2857723 is about 1690.4801093181. The cubic root of 2857723 is about 141.9079446998.

It can be divided in two parts, 285 and 7723, that added together give a palindrome (8008).

The spelling of 2857723 in words is "two million, eight hundred fifty-seven thousand, seven hundred twenty-three".