2956857 has 8 divisors (see below), whose sum is σ = 4113984. Its totient is φ = 1885488.

The previous prime is 2956841. The next prime is 2956897. The reversal of 2956857 is 7586592.

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

It is not a de Polignac number, because 2956857 - 2⁴ = 2956841 is a prime.

2956857 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2956897) 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, 21358 + ... + 21495.

It is an arithmetic number, because the mean of its divisors is an integer number (514248).

2^2956857 is an apocalyptic number.

It is an amenable number.

2956857 is a deficient number, since it is larger than the sum of its proper divisors (1157127).

2956857 is a wasteful number, since it uses less digits than its factorization.

2956857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42879.

The product of its digits is 151200, while the sum is 42.

The square root of 2956857 is about 1719.5513949865. The cubic root of 2956857 is about 143.5302497468.

The spelling of 2956857 in words is "two million, nine hundred fifty-six thousand, eight hundred fifty-seven".