2857961 has 8 divisors (see below), whose sum is σ = 3024000. Its totient is φ = 2693520.

The previous prime is 2857951. The next prime is 2857973. The reversal of 2857961 is 1697582.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2857961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2857931) 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, 6416 + ... + 6846.

It is an arithmetic number, because the mean of its divisors is an integer number (378000).

2^2857961 is an apocalyptic number.

It is an amenable number.

2857961 is a deficient number, since it is larger than the sum of its proper divisors (166039).

2857961 is a wasteful number, since it uses less digits than its factorization.

2857961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799.

The product of its digits is 30240, while the sum is 38.

The square root of 2857961 is about 1690.5505020555. The cubic root of 2857961 is about 141.9118841011.

The spelling of 2857961 in words is "two million, eight hundred fifty-seven thousand, nine hundred sixty-one".