2023640 has 16 divisors (see below), whose sum is σ = 4553280. Its totient is φ = 809440.

The previous prime is 2023639. The next prime is 2023661. The reversal of 2023640 is 463202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25256 + ... + 25335.

It is an arithmetic number, because the mean of its divisors is an integer number (284580).

2^2023640 is an apocalyptic number.

2023640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2023640 is an abundant number, since it is smaller than the sum of its proper divisors (2529640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2023640 is a wasteful number, since it uses less digits than its factorization.

2023640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50602 (or 50598 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 2023640 is about 1422.5470115255. The cubic root of 2023640 is about 126.4865707752.

Adding to 2023640 its reverse (463202), we get a palindrome (2486842).

The spelling of 2023640 in words is "two million, twenty-three thousand, six hundred forty".