2856013 has 4 divisors (see below), whose sum is σ = 2904480. Its totient is φ = 2807548.

The previous prime is 2856001. The next prime is 2856037. The reversal of 2856013 is 3106582.

It is a happy number.

2856013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3106582 = 2 ⋅1553291.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2856013 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 (2856083) by changing a digit.

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, 24145 + ... + 24262.

It is an arithmetic number, because the mean of its divisors is an integer number (726120).

2^2856013 is an apocalyptic number.

It is an amenable number.

2856013 is a deficient number, since it is larger than the sum of its proper divisors (48467).

2856013 is an equidigital number, since it uses as much as digits as its factorization.

2856013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48466.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2856013 is about 1689.9742601590. The cubic root of 2856013 is about 141.8796341646.

The spelling of 2856013 in words is "two million, eight hundred fifty-six thousand, thirteen".