2861982 has 48 divisors (see below), whose sum is σ = 6709248. Its totient is φ = 879120.

The previous prime is 2861977. The next prime is 2862011. The reversal of 2861982 is 2891682.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12723 + ... + 12945.

It is an arithmetic number, because the mean of its divisors is an integer number (139776).

2^2861982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2861982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3354624).

2861982 is an abundant number, since it is smaller than the sum of its proper divisors (3847266).

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

2861982 is a wasteful number, since it uses less digits than its factorization.

2861982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 282 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 2861982 is about 1691.7393416245. The cubic root of 2861982 is about 141.9784070850.

The spelling of 2861982 in words is "two million, eight hundred sixty-one thousand, nine hundred eighty-two".