2857938 has 16 divisors (see below), whose sum is σ = 6052320. Its totient is φ = 896576.

The previous prime is 2857937. The next prime is 2857949. The reversal of 2857938 is 8397582.

It is a super-2 number, since 2×2857938² = 16335619223688, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹⁸ + 8⁶ + 5⁹ + 7⁶ + 9³ + 3 + 8⁶ .

It is a self number, because there is not a number n which added to its sum of digits gives 2857938.

It is not an unprimeable number, because it can be changed into a prime (2857931) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 13908 + ... + 14111.

It is an arithmetic number, because the mean of its divisors is an integer number (378270).

2^2857938 is an apocalyptic number.

2857938 is an abundant number, since it is smaller than the sum of its proper divisors (3194382).

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

2857938 is a wasteful number, since it uses less digits than its factorization.

2857938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28041.

The product of its digits is 120960, while the sum is 42.

The square root of 2857938 is about 1690.5436995239. The cubic root of 2857938 is about 141.9115034122.

The spelling of 2857938 in words is "two million, eight hundred fifty-seven thousand, nine hundred thirty-eight".