2868381 has 12 divisors (see below), whose sum is σ = 4190940. Its totient is φ = 1890240.

The previous prime is 2868367. The next prime is 2868407. The reversal of 2868381 is 1838682.

It can be written as a sum of positive squares in 2 ways, for example, as 1602756 + 1265625 = 1266^2 + 1125^2 .

It is not a de Polignac number, because 2868381 - 2⁹ = 2867869 is a prime.

It is a super-2 number, since 2×2868381² = 16455219122322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2868331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 990 + ... + 2591.

It is an arithmetic number, because the mean of its divisors is an integer number (349245).

2^2868381 is an apocalyptic number.

It is an amenable number.

2868381 is a deficient number, since it is larger than the sum of its proper divisors (1322559).

2868381 is a wasteful number, since it uses less digits than its factorization.

2868381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3676 (or 3673 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 2868381 is about 1693.6295344614. The cubic root of 2868381 is about 142.0841430817.

It can be divided in two parts, 2868 and 381, that added together give a square (3249 = 57²).

The spelling of 2868381 in words is "two million, eight hundred sixty-eight thousand, three hundred eighty-one".