2856993 has 8 divisors (see below), whose sum is σ = 3940800. Its totient is φ = 1838928.

The previous prime is 2856977. The next prime is 2857009. The reversal of 2856993 is 3996582.

It is an interprime number because it is at equal distance from previous prime (2856977) and next prime (2857009).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2856993 - 2⁴ = 2856977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2856923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16333 + ... + 16506.

It is an arithmetic number, because the mean of its divisors is an integer number (492600).

2^2856993 is an apocalyptic number.

It is an amenable number.

2856993 is a deficient number, since it is larger than the sum of its proper divisors (1083807).

2856993 is a wasteful number, since it uses less digits than its factorization.

2856993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32871.

The product of its digits is 116640, while the sum is 42.

The square root of 2856993 is about 1690.2641805351. The cubic root of 2856993 is about 141.8958602977.

The spelling of 2856993 in words is "two million, eight hundred fifty-six thousand, nine hundred ninety-three".