2862981 has 24 divisors (see below), whose sum is σ = 4567680. Its totient is φ = 1727880.

The previous prime is 2862973. The next prime is 2862991. The reversal of 2862981 is 1892682.

2862981 is a `hidden beast` number, since 28 + 629 + 8 + 1 = 666.

It is not a de Polignac number, because 2862981 - 2³ = 2862973 is a prime.

It is a super-2 number, since 2×2862981² = 16393320412722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2862931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11860 + ... + 12098.

It is an arithmetic number, because the mean of its divisors is an integer number (190320).

2^2862981 is an apocalyptic number.

It is an amenable number.

2862981 is a deficient number, since it is larger than the sum of its proper divisors (1704699).

2862981 is a wasteful number, since it uses less digits than its factorization.

2862981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278 (or 253 counting only the distinct ones).

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

The square root of 2862981 is about 1692.0345741148. The cubic root of 2862981 is about 141.9949247674.

Subtracting from 2862981 its reverse (1892682), we obtain a cube (970299 = 99³).

The spelling of 2862981 in words is "two million, eight hundred sixty-two thousand, nine hundred eighty-one".