2856394 has 4 divisors (see below), whose sum is σ = 4284594. Its totient is φ = 1428196.

The previous prime is 2856379. The next prime is 2856397. The reversal of 2856394 is 4936582.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2480625 + 375769 = 1575^2 + 613^2 .

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (2856397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714097 + ... + 714100.

2^2856394 is an apocalyptic number.

2856394 is a deficient number, since it is larger than the sum of its proper divisors (1428200).

2856394 is a wasteful number, since it uses less digits than its factorization.

2856394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428199.

The product of its digits is 51840, while the sum is 37.

The square root of 2856394 is about 1690.0869800102. The cubic root of 2856394 is about 141.8859429287.

The spelling of 2856394 in words is "two million, eight hundred fifty-six thousand, three hundred ninety-four".