2771289 has 24 divisors (see below), whose sum is σ = 4324320. Its totient is φ = 1703808.

The previous prime is 2771281. The next prime is 2771297. The reversal of 2771289 is 9821772.

It is an interprime number because it is at equal distance from previous prime (2771281) and next prime (2771297).

It is not a de Polignac number, because 2771289 - 2³ = 2771281 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2771281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8874 + ... + 9180.

It is an arithmetic number, because the mean of its divisors is an integer number (180180).

2^2771289 is an apocalyptic number.

It is an amenable number.

2771289 is a deficient number, since it is larger than the sum of its proper divisors (1553031).

2771289 is a wasteful number, since it uses less digits than its factorization.

2771289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 386 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 2771289 is about 1664.7188951892. The cubic root of 2771289 is about 140.4625686011.

The spelling of 2771289 in words is "two million, seven hundred seventy-one thousand, two hundred eighty-nine".