2857172 has 12 divisors (see below), whose sum is σ = 5027316. Its totient is φ = 1420800.

The previous prime is 2857159. The next prime is 2857181. The reversal of 2857172 is 2717582.

2857172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 913936 + 1943236 = 956^2 + 1394^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1079 + ... + 2622.

It is an arithmetic number, because the mean of its divisors is an integer number (418943).

2^2857172 is an apocalyptic number.

It is an amenable number.

2857172 is a deficient number, since it is larger than the sum of its proper divisors (2170144).

2857172 is a wasteful number, since it uses less digits than its factorization.

2857172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3898 (or 3896 counting only the distinct ones).

The product of its digits is 7840, while the sum is 32.

The square root of 2857172 is about 1690.3171300084. The cubic root of 2857172 is about 141.8988236498.

The spelling of 2857172 in words is "two million, eight hundred fifty-seven thousand, one hundred seventy-two".