2856487 has 4 divisors (see below), whose sum is σ = 2865816. Its totient is φ = 2847160.

The previous prime is 2856473. The next prime is 2856509. The reversal of 2856487 is 7846582.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2856487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2850487) 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, 4189 + ... + 4822.

It is an arithmetic number, because the mean of its divisors is an integer number (716454).

2^2856487 is an apocalyptic number.

2856487 is a deficient number, since it is larger than the sum of its proper divisors (9329).

2856487 is an equidigital number, since it uses as much as digits as its factorization.

2856487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9328.

The product of its digits is 107520, while the sum is 40.

The square root of 2856487 is about 1690.1144931631. The cubic root of 2856487 is about 141.8874827781.

The spelling of 2856487 in words is "two million, eight hundred fifty-six thousand, four hundred eighty-seven".