2856393 has 12 divisors (see below), whose sum is σ = 4305600. Its totient is φ = 1821336.

The previous prime is 2856379. The next prime is 2856397. The reversal of 2856393 is 3936582.

2856393 is a `hidden beast` number, since 2 + 8 + 563 + 93 = 666.

It is not a de Polignac number, because 2856393 - 2⁴ = 2856377 is a prime.

2856393 is a lucky number.

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 in 11 ways as a sum of consecutive naturals, for example, 6693 + ... + 7106.

It is an arithmetic number, because the mean of its divisors is an integer number (358800).

2^2856393 is an apocalyptic number.

2856393 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2856393 is a deficient number, since it is larger than the sum of its proper divisors (1449207).

2856393 is a wasteful number, since it uses less digits than its factorization.

2856393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13828 (or 13825 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 2856393 is about 1690.0866841674. The cubic root of 2856393 is about 141.8859263710.

It can be divided in two parts, 2856 and 393, that added together give a square (3249 = 57²).

The spelling of 2856393 in words is "two million, eight hundred fifty-six thousand, three hundred ninety-three".