2856388 has 12 divisors (see below), whose sum is σ = 5120892. Its totient is φ = 1393280.

The previous prime is 2856379. The next prime is 2856397. The reversal of 2856388 is 8836582.

2856388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2856379) and next prime (2856397).

It can be written as a sum of positive squares in 2 ways, for example, as 1397124 + 1459264 = 1182^2 + 1208^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2856388.

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, 8545 + ... + 8872.

It is an arithmetic number, because the mean of its divisors is an integer number (426741).

2^2856388 is an apocalyptic number.

It is an amenable number.

2856388 is a deficient number, since it is larger than the sum of its proper divisors (2264504).

2856388 is a wasteful number, since it uses less digits than its factorization.

2856388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17462 (or 17460 counting only the distinct ones).

The product of its digits is 92160, while the sum is 40.

The square root of 2856388 is about 1690.0852049527. The cubic root of 2856388 is about 141.8858435824.

The spelling of 2856388 in words is "two million, eight hundred fifty-six thousand, three hundred eighty-eight".