2771982 has 40 divisors (see below), whose sum is σ = 6324912. Its totient is φ = 907200.

The previous prime is 2771971. The next prime is 2771999. The reversal of 2771982 is 2891772.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11382 + ... + 11622.

2^2771982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2771982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3162456).

2771982 is an abundant number, since it is smaller than the sum of its proper divisors (3552930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2771982 is a wasteful number, since it uses less digits than its factorization.

2771982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326 (or 317 counting only the distinct ones).

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

The square root of 2771982 is about 1664.9270254278. The cubic root of 2771982 is about 140.4742758425.

The spelling of 2771982 in words is "two million, seven hundred seventy-one thousand, nine hundred eighty-two".