2971887 has 8 divisors (see below), whose sum is σ = 3971760. Its totient is φ = 1976640.

The previous prime is 2971883. The next prime is 2971897. The reversal of 2971887 is 7881792.

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

It is not a de Polignac number, because 2971887 - 2² = 2971883 is a prime.

It is a super-2 number, since 2×2971887² = 17664224681538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2971883) 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, 837 + ... + 2577.

It is an arithmetic number, because the mean of its divisors is an integer number (496470).

2^2971887 is an apocalyptic number.

2971887 is a deficient number, since it is larger than the sum of its proper divisors (999873).

2971887 is a wasteful number, since it uses less digits than its factorization.

2971887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313.

The product of its digits is 56448, while the sum is 42.

The square root of 2971887 is about 1723.9161812571. The cubic root of 2971887 is about 143.7730317224.

The spelling of 2971887 in words is "two million, nine hundred seventy-one thousand, eight hundred eighty-seven".