2823681 has 32 divisors (see below), whose sum is σ = 4561920. Its totient is φ = 1520064.

The previous prime is 2823679. The next prime is 2823721. The reversal of 2823681 is 1863282.

It is not a de Polignac number, because 2823681 - 2¹ = 2823679 is a prime.

It is a super-2 number, since 2×2823681² = 15946348779522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2823631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47830 + ... + 47888.

It is an arithmetic number, because the mean of its divisors is an integer number (142560).

2^2823681 is an apocalyptic number.

2823681 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2823681 is a deficient number, since it is larger than the sum of its proper divisors (1738239).

2823681 is a wasteful number, since it uses less digits than its factorization.

2823681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165.

The product of its digits is 4608, while the sum is 30.

The square root of 2823681 is about 1680.3812067504. The cubic root of 2823681 is about 141.3422098723.

The spelling of 2823681 in words is "two million, eight hundred twenty-three thousand, six hundred eighty-one".