2440023 has 8 divisors (see below), whose sum is σ = 3268608. Its totient is φ = 1619064.

The previous prime is 2440021. The next prime is 2440043. The reversal of 2440023 is 3200442.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2440023 - 2¹ = 2440021 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2439984 and 2440011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2440021) 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 7 ways as a sum of consecutive naturals, for example, 1111 + ... + 2472.

It is an arithmetic number, because the mean of its divisors is an integer number (408576).

2^2440023 is an apocalyptic number.

2440023 is a deficient number, since it is larger than the sum of its proper divisors (828585).

2440023 is a wasteful number, since it uses less digits than its factorization.

2440023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3813.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 2440023 is about 1562.0572972846. The cubic root of 2440023 is about 134.6267329501.

Adding to 2440023 its reverse (3200442), we get a palindrome (5640465).

The spelling of 2440023 in words is "two million, four hundred forty thousand, twenty-three".