2857222 has 8 divisors (see below), whose sum is σ = 4314672. Its totient is φ = 1419000.

The previous prime is 2857219. The next prime is 2857223. The reversal of 2857222 is 2227582.

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

It is a d-powerful number, because it can be written as 2³ + 8 + 5⁹ + 7⁶ + 2¹⁸ + 2¹⁸ + 2¹⁸ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2857223) 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, 4429 + ... + 5032.

It is an arithmetic number, because the mean of its divisors is an integer number (539334).

2^2857222 is an apocalyptic number.

2857222 is a deficient number, since it is larger than the sum of its proper divisors (1457450).

2857222 is a wasteful number, since it uses less digits than its factorization.

2857222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9614.

The product of its digits is 4480, while the sum is 28.

The square root of 2857222 is about 1690.3319200678. The cubic root of 2857222 is about 141.8996513796.

The spelling of 2857222 in words is "two million, eight hundred fifty-seven thousand, two hundred twenty-two".