2642823 has 12 divisors (see below), whose sum is σ = 3906760. Its totient is φ = 1720656.

The previous prime is 2642821. The next prime is 2642839. The reversal of 2642823 is 3282462.

It is not a de Polignac number, because 2642823 - 2¹ = 2642821 is a prime.

It is a super-4 number, since 4×2642823⁴ (a number of 27 digits) contains 4444 as substring.

It is a d-powerful number, because it can be written as 2⁷ + 6² + 4⁵ + 2¹⁹ + 8³ + 2²¹ + 3⁹ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2642821) 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, 3028 + ... + 3801.

2^2642823 is an apocalyptic number.

2642823 is a deficient number, since it is larger than the sum of its proper divisors (1263937).

2642823 is a wasteful number, since it uses less digits than its factorization.

2642823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6878 (or 6875 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 2642823 is about 1625.6761670148. The cubic root of 2642823 is about 138.2577099928.

It can be divided in two parts, 26 and 42823, that added together give a square (42849 = 207²).

The spelling of 2642823 in words is "two million, six hundred forty-two thousand, eight hundred twenty-three".