2981286 has 80 divisors (see below), whose sum is σ = 8363520. Its totient is φ = 771120.

The previous prime is 2981263. The next prime is 2981311. The reversal of 2981286 is 6821892.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2981286.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 12355 + ... + 12593.

It is an arithmetic number, because the mean of its divisors is an integer number (104544).

2^2981286 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2981286, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4181760).

2981286 is an abundant number, since it is smaller than the sum of its proper divisors (5382234).

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

2981286 is a wasteful number, since it uses less digits than its factorization.

2981286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 262 counting only the distinct ones).

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

The square root of 2981286 is about 1726.6400898856. The cubic root of 2981286 is about 143.9244395251.

Subtracting 2981286 from its reverse (6821892), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 2981286 in words is "two million, nine hundred eighty-one thousand, two hundred eighty-six".