2856091 has 8 divisors (see below), whose sum is σ = 3279584. Its totient is φ = 2436480.

The previous prime is 2856083. The next prime is 2856097. The reversal of 2856091 is 1906582.

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

It is a cyclic number.

It is not a de Polignac number, because 2856091 - 2³ = 2856083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2856097) 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, 841 + ... + 2533.

It is an arithmetic number, because the mean of its divisors is an integer number (409948).

2^2856091 is an apocalyptic number.

2856091 is a deficient number, since it is larger than the sum of its proper divisors (423493).

2856091 is a wasteful number, since it uses less digits than its factorization.

2856091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 2856091 is about 1689.9973372760. The cubic root of 2856091 is about 141.8809257683.

The spelling of 2856091 in words is "two million, eight hundred fifty-six thousand, ninety-one".